139851268 has 24 divisors (see below), whose sum is σ = 252806400. Its totient is φ = 67642848.

The previous prime is 139851263. The next prime is 139851317. The reversal of 139851268 is 862158931.

It is a super-2 number, since 2×139851268² = 39116754322415648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139851263) 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, 23853 + ... + 29131.

It is an arithmetic number, because the mean of its divisors is an integer number (10533600).

Almost surely, 2^139851268 is an apocalyptic number.

It is an amenable number.

139851268 is a deficient number, since it is larger than the sum of its proper divisors (112955132).

139851268 is a wasteful number, since it uses less digits than its factorization.

139851268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5499 (or 5497 counting only the distinct ones).

The product of its digits is 103680, while the sum is 43.

The square root of 139851268 is about 11825.8728219104. The cubic root of 139851268 is about 519.0654664516.

The spelling of 139851268 in words is "one hundred thirty-nine million, eight hundred fifty-one thousand, two hundred sixty-eight".