126956291 has 16 divisors (see below), whose sum is σ = 159694848. Its totient is φ = 98044800.

The previous prime is 126956267. The next prime is 126956317. The reversal of 126956291 is 192659621.

It is not a de Polignac number, because 126956291 - 2⁶ = 126956227 is a prime.

It is a super-2 number, since 2×126956291² = 32235799648953362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126956231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1406 + ... + 15996.

It is an arithmetic number, because the mean of its divisors is an integer number (9980928).

Almost surely, 2^126956291 is an apocalyptic number.

126956291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

126956291 is a deficient number, since it is larger than the sum of its proper divisors (32738557).

126956291 is a wasteful number, since it uses less digits than its factorization.

126956291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14722.

The product of its digits is 58320, while the sum is 41.

The square root of 126956291 is about 11267.4882294148. The cubic root of 126956291 is about 502.5948977147.

The spelling of 126956291 in words is "one hundred twenty-six million, nine hundred fifty-six thousand, two hundred ninety-one".