137123149 has 2 divisors, whose sum is σ = 137123150. Its totient is φ = 137123148.

The previous prime is 137123141. The next prime is 137123167. The reversal of 137123149 is 941321731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136726249 + 396900 = 11693^2 + 630^2 .

It is a cyclic number.

It is not a de Polignac number, because 137123149 - 2³ = 137123141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 137123149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137123141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68561574 + 68561575.

It is an arithmetic number, because the mean of its divisors is an integer number (68561575).

Almost surely, 2^137123149 is an apocalyptic number.

It is an amenable number.

137123149 is a deficient number, since it is larger than the sum of its proper divisors (1).

137123149 is an equidigital number, since it uses as much as digits as its factorization.

137123149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 31.

The square root of 137123149 is about 11709.9593936102. The cubic root of 137123149 is about 515.6680919921.

It can be divided in two parts, 13712 and 3149, that added together give a palindrome (16861).

The spelling of 137123149 in words is "one hundred thirty-seven million, one hundred twenty-three thousand, one hundred forty-nine".