137840474 has 4 divisors (see below), whose sum is σ = 206760714. Its totient is φ = 68920236.

The previous prime is 137840467. The next prime is 137840489. The reversal of 137840474 is 474048731.

137840474 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 474048731 = 13 ⋅36465287.

It can be written as a sum of positive squares in only one way, i.e., 86359849 + 51480625 = 9293^2 + 7175^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34460117 + ... + 34460120.

Almost surely, 2^137840474 is an apocalyptic number.

137840474 is a deficient number, since it is larger than the sum of its proper divisors (68920240).

137840474 is an equidigital number, since it uses as much as digits as its factorization.

137840474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68920239.

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 137840474 is about 11740.5482836195. The cubic root of 137840474 is about 516.5657242041.

It can be divided in two parts, 13 and 7840474, that added together give a palindrome (7840487).

The spelling of 137840474 in words is "one hundred thirty-seven million, eight hundred forty thousand, four hundred seventy-four".