139801920 has 112 divisors (see below), whose sum is σ = 448348608. Its totient is φ = 36904960.

The previous prime is 139801919. The next prime is 139801951. The reversal of 139801920 is 29108931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102040 + ... + 103400.

Almost surely, 2^139801920 is an apocalyptic number.

139801920 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 139801920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224174304).

139801920 is an abundant number, since it is smaller than the sum of its proper divisors (308546688).

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

139801920 is a wasteful number, since it uses less digits than its factorization.

139801920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488 (or 1478 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 139801920 is about 11823.7861956312. The cubic root of 139801920 is about 519.0044066881.

The spelling of 139801920 in words is "one hundred thirty-nine million, eight hundred one thousand, nine hundred twenty".