126732491 has 2 divisors, whose sum is σ = 126732492. Its totient is φ = 126732490.

The previous prime is 126732439. The next prime is 126732499. The reversal of 126732491 is 194237621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126732491 is a prime.

It is a super-2 number, since 2×126732491² = 32122248550130162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126732499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63366245 + 63366246.

It is an arithmetic number, because the mean of its divisors is an integer number (63366246).

Almost surely, 2^126732491 is an apocalyptic number.

126732491 is a deficient number, since it is larger than the sum of its proper divisors (1).

126732491 is an equidigital number, since it uses as much as digits as its factorization.

126732491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 35.

The square root of 126732491 is about 11257.5526203523. The cubic root of 126732491 is about 502.2993973339.

The spelling of 126732491 in words is "one hundred twenty-six million, seven hundred thirty-two thousand, four hundred ninety-one".