1240635272 has 32 divisors (see below), whose sum is σ = 2429239680. Its totient is φ = 592880640.

The previous prime is 1240635251. The next prime is 1240635281. The reversal of 1240635272 is 2725360421.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387197 + ... + 390387.

It is an arithmetic number, because the mean of its divisors is an integer number (75913740).

Almost surely, 2^1240635272 is an apocalyptic number.

It is an amenable number.

1240635272 is a deficient number, since it is larger than the sum of its proper divisors (1188604408).

1240635272 is a wasteful number, since it uses less digits than its factorization.

1240635272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5333 (or 5329 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 1240635272 is about 35222.6528245673. The cubic root of 1240635272 is about 1074.5205064034.

Adding to 1240635272 its reverse (2725360421), we get a palindrome (3965995693).

The spelling of 1240635272 in words is "one billion, two hundred forty million, six hundred thirty-five thousand, two hundred seventy-two".