139267920 has 160 divisors (see below), whose sum is σ = 478255104. Its totient is φ = 33241600.

The previous prime is 139267913. The next prime is 139267937. The reversal of 139267920 is 29762931.

It is a super-2 number, since 2×139267920² = 38791107082252800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187069 + ... + 187811.

Almost surely, 2^139267920 is an apocalyptic number.

139267920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139267920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239127552).

139267920 is an abundant number, since it is smaller than the sum of its proper divisors (338987184).

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

139267920 is a wasteful number, since it uses less digits than its factorization.

139267920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841 (or 835 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 139267920 is about 11801.1829915479. The cubic root of 139267920 is about 518.3427515466.

The spelling of 139267920 in words is "one hundred thirty-nine million, two hundred sixty-seven thousand, nine hundred twenty".