1201534560 has 240 divisors, whose sum is σ = 4295347056. Its totient is φ = 316265472.

The previous prime is 1201534553. The next prime is 1201534567. The reversal of 1201534560 is 654351021.

1201534560 is a `hidden beast` number, since 1 + 201 + 5 + 3 + 456 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1201534553) and next prime (1201534567).

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201534567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1075122 + ... + 1076238.

Almost surely, 2^1201534560 is an apocalyptic number.

1201534560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201534560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2147673528).

1201534560 is an abundant number, since it is smaller than the sum of its proper divisors (3093812496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1201534560 is a wasteful number, since it uses less digits than its factorization.

1201534560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227 (or 1210 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1201534560 is about 34663.1585404446. The cubic root of 1201534560 is about 1063.1113521572. Note that the first 3 decimals are identical.

Adding to 1201534560 its reverse (654351021), we get a palindrome (1855885581).

The spelling of 1201534560 in words is "one billion, two hundred one million, five hundred thirty-four thousand, five hundred sixty".