137411921 has 2 divisors, whose sum is σ = 137411922. Its totient is φ = 137411920.

The previous prime is 137411893. The next prime is 137411927. The reversal of 137411921 is 129114731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99281296 + 38130625 = 9964^2 + 6175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137411921 is a prime.

It is not a weakly prime, because it can be changed into another prime (137411927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68705960 + 68705961.

It is an arithmetic number, because the mean of its divisors is an integer number (68705961).

Almost surely, 2^137411921 is an apocalyptic number.

It is an amenable number.

137411921 is a deficient number, since it is larger than the sum of its proper divisors (1).

137411921 is an equidigital number, since it uses as much as digits as its factorization.

137411921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 29.

The square root of 137411921 is about 11722.2830967350. The cubic root of 137411921 is about 516.0298254599.

The spelling of 137411921 in words is "one hundred thirty-seven million, four hundred eleven thousand, nine hundred twenty-one".