401542432 has 24 divisors (see below), whose sum is σ = 807359616. Its totient is φ = 196498752.

The previous prime is 401542423. The next prime is 401542451. The reversal of 401542432 is 234245104.

It is a happy number.

It is a super-2 number, since 2×401542432² = 322472649392949248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401542397 and 401542406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131988 + ... + 134995.

It is an arithmetic number, because the mean of its divisors is an integer number (33639984).

Almost surely, 2^401542432 is an apocalyptic number.

It is an amenable number.

401542432 is an abundant number, since it is smaller than the sum of its proper divisors (405817184).

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

401542432 is a wasteful number, since it uses less digits than its factorization.

401542432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267040 (or 267032 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 401542432 is about 20038.5236981171. The cubic root of 401542432 is about 737.7521463599.

Adding to 401542432 its reverse (234245104), we get a palindrome (635787536).

The spelling of 401542432 in words is "four hundred one million, five hundred forty-two thousand, four hundred thirty-two".