137917427 has 2 divisors, whose sum is σ = 137917428. Its totient is φ = 137917426.

The previous prime is 137917421. The next prime is 137917457. The reversal of 137917427 is 724719731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137917427 - 2⁶ = 137917363 is a prime.

It is not a weakly prime, because it can be changed into another prime (137917421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68958713 + 68958714.

It is an arithmetic number, because the mean of its divisors is an integer number (68958714).

Almost surely, 2^137917427 is an apocalyptic number.

137917427 is a deficient number, since it is larger than the sum of its proper divisors (1).

137917427 is an equidigital number, since it uses as much as digits as its factorization.

137917427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 74088, while the sum is 41.

The square root of 137917427 is about 11743.8250583019. The cubic root of 137917427 is about 516.6618350340.

The spelling of 137917427 in words is "one hundred thirty-seven million, nine hundred seventeen thousand, four hundred twenty-seven".