401442052 has 12 divisors (see below), whose sum is σ = 766389456. Its totient is φ = 182473640.

The previous prime is 401442049. The next prime is 401442061. The reversal of 401442052 is 250244104.

It is a happy number.

It is a super-2 number, since 2×401442052² = 322311442227941408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 4561798 + ... + 4561885.

It is an arithmetic number, because the mean of its divisors is an integer number (63865788).

Almost surely, 2^401442052 is an apocalyptic number.

It is an amenable number.

401442052 is a deficient number, since it is larger than the sum of its proper divisors (364947404).

401442052 is a wasteful number, since it uses less digits than its factorization.

401442052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9123698 (or 9123696 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 401442052 is about 20036.0188660322. The cubic root of 401442052 is about 737.6906653254.

Adding to 401442052 its reverse (250244104), we get a palindrome (651686156).

The spelling of 401442052 in words is "four hundred one million, four hundred forty-two thousand, fifty-two".