1240402552 has 16 divisors (see below), whose sum is σ = 2462564160. Its totient is φ = 583718784.

The previous prime is 1240402519. The next prime is 1240402573. The reversal of 1240402552 is 2552040421.

It is a super-2 number, since 2×1240402552² = 3077196982016225408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4560168 + ... + 4560439.

It is an arithmetic number, because the mean of its divisors is an integer number (153910260).

Almost surely, 2^1240402552 is an apocalyptic number.

It is an amenable number.

1240402552 is a deficient number, since it is larger than the sum of its proper divisors (1222161608).

1240402552 is a wasteful number, since it uses less digits than its factorization.

1240402552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9120630 (or 9120626 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 1240402552 is about 35219.3491138039. The cubic root of 1240402552 is about 1074.4533155442.

Adding to 1240402552 its reverse (2552040421), we get a palindrome (3792442973).

The spelling of 1240402552 in words is "one billion, two hundred forty million, four hundred two thousand, five hundred fifty-two".