256266123 has 8 divisors (see below), whose sum is σ = 342041808. Its totient is φ = 170667264.

The previous prime is 256266103. The next prime is 256266133. The reversal of 256266123 is 321662652.

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

It is not a de Polignac number, because 256266123 - 2¹³ = 256257931 is a prime.

It is a super-2 number, since 2×256266123² = 131344651594902258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256266103) 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, 40786 + ... + 46647.

It is an arithmetic number, because the mean of its divisors is an integer number (42755226).

Almost surely, 2^256266123 is an apocalyptic number.

256266123 is a deficient number, since it is larger than the sum of its proper divisors (85775685).

256266123 is an equidigital number, since it uses as much as digits as its factorization.

256266123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88413.

The product of its digits is 25920, while the sum is 33.

The square root of 256266123 is about 16008.3141835735. The cubic root of 256266123 is about 635.1803674705.

The spelling of 256266123 in words is "two hundred fifty-six million, two hundred sixty-six thousand, one hundred twenty-three".