137875290 has 64 divisors (see below), whose sum is σ = 390389760. Its totient is φ = 30496320.

The previous prime is 137875289. The next prime is 137875301. The reversal of 137875290 is 92578731.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4080 + ... + 17099.

It is an arithmetic number, because the mean of its divisors is an integer number (6099840).

Almost surely, 2^137875290 is an apocalyptic number.

137875290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137875290 is an abundant number, since it is smaller than the sum of its proper divisors (252514470).

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

137875290 is a wasteful number, since it uses less digits than its factorization.

137875290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21227.

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 137875290 is about 11742.0309146246. The cubic root of 137875290 is about 516.6092122492.

The spelling of 137875290 in words is "one hundred thirty-seven million, eight hundred seventy-five thousand, two hundred ninety".