126991235 has 8 divisors (see below), whose sum is σ = 174159456. Its totient is φ = 87079680.

The previous prime is 126991223. The next prime is 126991297. The reversal of 126991235 is 532199621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126991235 - 2⁶ = 126991171 is a prime.

It is a super-2 number, since 2×126991235² = 32253547533650450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1814126 + ... + 1814195.

It is an arithmetic number, because the mean of its divisors is an integer number (21769932).

Almost surely, 2^126991235 is an apocalyptic number.

126991235 is a deficient number, since it is larger than the sum of its proper divisors (47168221).

126991235 is an equidigital number, since it uses as much as digits as its factorization.

126991235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3628333.

The product of its digits is 29160, while the sum is 38.

The square root of 126991235 is about 11269.0387788844. The cubic root of 126991235 is about 502.6410056176.

The spelling of 126991235 in words is "one hundred twenty-six million, nine hundred ninety-one thousand, two hundred thirty-five".