126634251 has 16 divisors (see below), whose sum is σ = 178675200. Its totient is φ = 79611840.

The previous prime is 126634229. The next prime is 126634253. The reversal of 126634251 is 152436621.

It is not a de Polignac number, because 126634251 - 2⁵ = 126634219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126634253) 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, 8026 + ... + 17823.

It is an arithmetic number, because the mean of its divisors is an integer number (11167200).

Almost surely, 2^126634251 is an apocalyptic number.

126634251 is a deficient number, since it is larger than the sum of its proper divisors (52040949).

126634251 is a wasteful number, since it uses less digits than its factorization.

126634251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25946.

The product of its digits is 8640, while the sum is 30.

The square root of 126634251 is about 11253.1884814927. The cubic root of 126634251 is about 502.1695736176.

The spelling of 126634251 in words is "one hundred twenty-six million, six hundred thirty-four thousand, two hundred fifty-one".