139074240 has 112 divisors (see below), whose sum is σ = 443922912. Its totient is φ = 36888576.

The previous prime is 139074233. The next prime is 139074253. The reversal of 139074240 is 42470931.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 139074198 and 139074207.

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, 304092 + ... + 304548.

Almost surely, 2^139074240 is an apocalyptic number.

139074240 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 139074240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221961456).

139074240 is an abundant number, since it is smaller than the sum of its proper divisors (304848672).

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

139074240 is a wasteful number, since it uses less digits than its factorization.

139074240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 784 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 139074240 is about 11792.9741795698. The cubic root of 139074240 is about 518.1023535214.

The spelling of 139074240 in words is "one hundred thirty-nine million, seventy-four thousand, two hundred forty".