401001252 has 12 divisors (see below), whose sum is σ = 935669616. Its totient is φ = 133667080.

The previous prime is 401001217. The next prime is 401001269. The reversal of 401001252 is 252100104.

It is a tau number, because it is divible by the number of its divisors (12).

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, 16708374 + ... + 16708397.

It is an arithmetic number, because the mean of its divisors is an integer number (77972468).

Almost surely, 2^401001252 is an apocalyptic number.

It is an amenable number.

401001252 is an abundant number, since it is smaller than the sum of its proper divisors (534668364).

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

401001252 is a wasteful number, since it uses less digits than its factorization.

401001252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33416778 (or 33416776 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 401001252 is about 20025.0156554246. The cubic root of 401001252 is about 737.4205614715.

Adding to 401001252 its reverse (252100104), we get a palindrome (653101356).

The spelling of 401001252 in words is "four hundred one million, one thousand, two hundred fifty-two".