126875491 has 2 divisors, whose sum is σ = 126875492. Its totient is φ = 126875490.

The previous prime is 126875473. The next prime is 126875519. The reversal of 126875491 is 194578621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126875491 - 2⁷ = 126875363 is a prime.

It is not a weakly prime, because it can be changed into another prime (126875431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63437745 + 63437746.

It is an arithmetic number, because the mean of its divisors is an integer number (63437746).

Almost surely, 2^126875491 is an apocalyptic number.

126875491 is a deficient number, since it is larger than the sum of its proper divisors (1).

126875491 is an equidigital number, since it uses as much as digits as its factorization.

126875491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 43.

The square root of 126875491 is about 11263.9021213787. The cubic root of 126875491 is about 502.4882513362.

The spelling of 126875491 in words is "one hundred twenty-six million, eight hundred seventy-five thousand, four hundred ninety-one".