137370239 has 4 divisors (see below), whose sum is σ = 137764200. Its totient is φ = 136976280.

The previous prime is 137370199. The next prime is 137370253. The reversal of 137370239 is 932073731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 932073731 = 5839 ⋅159629.

It is a cyclic number.

It is not a de Polignac number, because 137370239 - 2¹⁶ = 137304703 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 137370199 and 137370208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137370839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196457 + ... + 197154.

It is an arithmetic number, because the mean of its divisors is an integer number (34441050).

Almost surely, 2^137370239 is an apocalyptic number.

137370239 is a deficient number, since it is larger than the sum of its proper divisors (393961).

137370239 is an equidigital number, since it uses as much as digits as its factorization.

137370239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393960.

The product of its (nonzero) digits is 23814, while the sum is 35.

The square root of 137370239 is about 11720.5050659091. The cubic root of 137370239 is about 515.9776433536.

The spelling of 137370239 in words is "one hundred thirty-seven million, three hundred seventy thousand, two hundred thirty-nine".