126612291 has 8 divisors (see below), whose sum is σ = 181802320. Its totient is φ = 77915232.

The previous prime is 126612281. The next prime is 126612293. The reversal of 126612291 is 192216621.

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

It is not a de Polignac number, because 126612291 - 2⁵ = 126612259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126612293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1623196 + ... + 1623273.

It is an arithmetic number, because the mean of its divisors is an integer number (22725290).

Almost surely, 2^126612291 is an apocalyptic number.

126612291 is a deficient number, since it is larger than the sum of its proper divisors (55190029).

126612291 is a wasteful number, since it uses less digits than its factorization.

126612291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246485.

The product of its digits is 2592, while the sum is 30.

The square root of 126612291 is about 11252.2127157284. The cubic root of 126612291 is about 502.1405443956.

The spelling of 126612291 in words is "one hundred twenty-six million, six hundred twelve thousand, two hundred ninety-one".