137243089 has 2 divisors, whose sum is σ = 137243090. Its totient is φ = 137243088.

The previous prime is 137243087. The next prime is 137243123. The reversal of 137243089 is 980342731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136702864 + 540225 = 11692^2 + 735^2 .

It is a cyclic number.

It is not a de Polignac number, because 137243089 - 2¹ = 137243087 is a prime.

Together with 137243087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (137243081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68621544 + 68621545.

It is an arithmetic number, because the mean of its divisors is an integer number (68621545).

Almost surely, 2^137243089 is an apocalyptic number.

It is an amenable number.

137243089 is a deficient number, since it is larger than the sum of its proper divisors (1).

137243089 is an equidigital number, since it uses as much as digits as its factorization.

137243089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 137243089 is about 11715.0795558545. The cubic root of 137243089 is about 515.8183977750.

The spelling of 137243089 in words is "one hundred thirty-seven million, two hundred forty-three thousand, eighty-nine".