401251542 has 16 divisors (see below), whose sum is σ = 804241920. Its totient is φ = 133460712.

The previous prime is 401251541. The next prime is 401251567. The reversal of 401251542 is 245152104.

It is a super-2 number, since 2×401251542² = 322005599914755528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401251541) 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, 69442 + ... + 74997.

It is an arithmetic number, because the mean of its divisors is an integer number (50265120).

Almost surely, 2^401251542 is an apocalyptic number.

401251542 is an abundant number, since it is smaller than the sum of its proper divisors (402990378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401251542 is a wasteful number, since it uses less digits than its factorization.

401251542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144907.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 401251542 is about 20031.2641138796. The cubic root of 401251542 is about 737.5739530169.

The spelling of 401251542 in words is "four hundred one million, two hundred fifty-one thousand, five hundred forty-two".