1200153540 has 48 divisors (see below), whose sum is σ = 3375271872. Its totient is φ = 318627456.

The previous prime is 1200153509. The next prime is 1200153551. The reversal of 1200153540 is 453510021.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30439 + ... + 57678.

It is an arithmetic number, because the mean of its divisors is an integer number (70318164).

Almost surely, 2^1200153540 is an apocalyptic number.

1200153540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200153540 is an abundant number, since it is smaller than the sum of its proper divisors (2175118332).

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

1200153540 is a wasteful number, since it uses less digits than its factorization.

1200153540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88356 (or 88354 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1200153540 is about 34643.2322395010. The cubic root of 1200153540 is about 1062.7038896377.

Adding to 1200153540 its reverse (453510021), we get a palindrome (1653663561).

The spelling of 1200153540 in words is "one billion, two hundred million, one hundred fifty-three thousand, five hundred forty".