126717131 has 2 divisors, whose sum is σ = 126717132. Its totient is φ = 126717130.

The previous prime is 126717127. The next prime is 126717197. The reversal of 126717131 is 131717621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126717131 - 2² = 126717127 is a prime.

It is a super-2 number, since 2×126717131² = 32114462577742322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126717094 and 126717103.

It is not a weakly prime, because it can be changed into another prime (126717121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63358565 + 63358566.

It is an arithmetic number, because the mean of its divisors is an integer number (63358566).

Almost surely, 2^126717131 is an apocalyptic number.

126717131 is a deficient number, since it is larger than the sum of its proper divisors (1).

126717131 is an equidigital number, since it uses as much as digits as its factorization.

126717131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1764, while the sum is 29.

The square root of 126717131 is about 11256.8703910101. The cubic root of 126717131 is about 502.2791035892.

The spelling of 126717131 in words is "one hundred twenty-six million, seven hundred seventeen thousand, one hundred thirty-one".