1201455600 has 240 divisors, whose sum is σ = 4065168384. Its totient is φ = 302720000.

The previous prime is 1201455533. The next prime is 1201455611. The reversal of 1201455600 is 65541021.

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 (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2787385 + ... + 2787815.

Almost surely, 2^1201455600 is an apocalyptic number.

1201455600 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 1201455600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2032584192).

1201455600 is an abundant number, since it is smaller than the sum of its proper divisors (2863712784).

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

1201455600 is a wasteful number, since it uses less digits than its factorization.

1201455600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576 (or 565 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1201455600 is about 34662.0195603199. The cubic root of 1201455600 is about 1063.0880638519.

Adding to 1201455600 its reverse (65541021), we get a palindrome (1266996621).

The spelling of 1201455600 in words is "one billion, two hundred one million, four hundred fifty-five thousand, six hundred".