139240264 has 32 divisors (see below), whose sum is σ = 268329600. Its totient is φ = 67697280.

The previous prime is 139240237. The next prime is 139240267. The reversal of 139240264 is 462042931.

It is a happy number.

It is a super-2 number, since 2×139240264² = 38775702237579392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139240267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143509 + ... + 144475.

It is an arithmetic number, because the mean of its divisors is an integer number (8385300).

Almost surely, 2^139240264 is an apocalyptic number.

It is an amenable number.

139240264 is a deficient number, since it is larger than the sum of its proper divisors (129089336).

139240264 is a wasteful number, since it uses less digits than its factorization.

139240264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453 (or 1449 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 139240264 is about 11800.0111864354. The cubic root of 139240264 is about 518.3084382217.

The spelling of 139240264 in words is "one hundred thirty-nine million, two hundred forty thousand, two hundred sixty-four".