401255242 has 16 divisors (see below), whose sum is σ = 608630400. Its totient is φ = 198391248.

The previous prime is 401255237. The next prime is 401255249. The reversal of 401255242 is 242552104.

It is a super-2 number, since 2×401255242² = 322011538464957128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401255249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63448 + ... + 69484.

It is an arithmetic number, because the mean of its divisors is an integer number (38039400).

Almost surely, 2^401255242 is an apocalyptic number.

401255242 is a deficient number, since it is larger than the sum of its proper divisors (207375158).

401255242 is a wasteful number, since it uses less digits than its factorization.

401255242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6405.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 401255242 is about 20031.3564692958. The cubic root of 401255242 is about 737.5762201029.

The spelling of 401255242 in words is "four hundred one million, two hundred fifty-five thousand, two hundred forty-two".