137885042 has 4 divisors (see below), whose sum is σ = 206827566. Its totient is φ = 68942520.

The previous prime is 137885039. The next prime is 137885057. The reversal of 137885042 is 240588731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240588731 = 1193 ⋅201667.

It can be written as a sum of positive squares in only one way, i.e., 129527161 + 8357881 = 11381^2 + 2891^2 .

It is a junction number, because it is equal to n+sod(n) for n = 137884987 and 137885005.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34471259 + ... + 34471262.

Almost surely, 2^137885042 is an apocalyptic number.

137885042 is a deficient number, since it is larger than the sum of its proper divisors (68942524).

137885042 is an equidigital number, since it uses as much as digits as its factorization.

137885042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68942523.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 137885042 is about 11742.4461676433. The cubic root of 137885042 is about 516.6213919861.

The spelling of 137885042 in words is "one hundred thirty-seven million, eight hundred eighty-five thousand, forty-two".