137420927 has 4 divisors (see below), whose sum is σ = 157052496. Its totient is φ = 117789360.

The previous prime is 137420893. The next prime is 137420947. The reversal of 137420927 is 729024731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 137420927 - 2⁸ = 137420671 is a prime.

It is a super-2 number, since 2×137420927² = 37769022355078658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137420947) 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, 9815774 + ... + 9815787.

It is an arithmetic number, because the mean of its divisors is an integer number (39263124).

Almost surely, 2^137420927 is an apocalyptic number.

137420927 is a deficient number, since it is larger than the sum of its proper divisors (19631569).

137420927 is an equidigital number, since it uses as much as digits as its factorization.

137420927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19631568.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 137420927 is about 11722.6672306263. The cubic root of 137420927 is about 516.0410987736.

The spelling of 137420927 in words is "one hundred thirty-seven million, four hundred twenty thousand, nine hundred twenty-seven".