126542737 has 2 divisors, whose sum is σ = 126542738. Its totient is φ = 126542736.

The previous prime is 126542693. The next prime is 126542743. The reversal of 126542737 is 737245621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83101456 + 43441281 = 9116^2 + 6591^2 .

It is a cyclic number.

It is not a de Polignac number, because 126542737 - 2²³ = 118154129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126542696 and 126542705.

It is not a weakly prime, because it can be changed into another prime (126542777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63271368 + 63271369.

It is an arithmetic number, because the mean of its divisors is an integer number (63271369).

Almost surely, 2^126542737 is an apocalyptic number.

It is an amenable number.

126542737 is a deficient number, since it is larger than the sum of its proper divisors (1).

126542737 is an equidigital number, since it uses as much as digits as its factorization.

126542737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 37.

The square root of 126542737 is about 11249.1216101525. The cubic root of 126542737 is about 502.0485778612.

The spelling of 126542737 in words is "one hundred twenty-six million, five hundred forty-two thousand, seven hundred thirty-seven".