137866842 has 24 divisors (see below), whose sum is σ = 299022516. Its totient is φ = 45907776.

The previous prime is 137866837. The next prime is 137866849. The reversal of 137866842 is 248668731.

It can be written as a sum of positive squares in 2 ways, for example, as 89132481 + 48734361 = 9441^2 + 6981^2 .

It is a super-2 number, since 2×137866842² = 38014532246105928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (137866849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16678 + ... + 23534.

Almost surely, 2^137866842 is an apocalyptic number.

137866842 is an abundant number, since it is smaller than the sum of its proper divisors (161155674).

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

137866842 is a wasteful number, since it uses less digits than its factorization.

137866842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7982 (or 7979 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 137866842 is about 11741.6711757739. The cubic root of 137866842 is about 516.5986606757.

The spelling of 137866842 in words is "one hundred thirty-seven million, eight hundred sixty-six thousand, eight hundred forty-two".