401421442 has 8 divisors (see below), whose sum is σ = 637551756. Its totient is φ = 188904192.

The previous prime is 401421421. The next prime is 401421457. The reversal of 401421442 is 244124104.

It can be written as a sum of positive squares in 2 ways, for example, as 311910921 + 89510521 = 17661^2 + 9461^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×401421442² = 322278348194718728, which contains 22 as substring.

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, 5903223 + ... + 5903290.

Almost surely, 2^401421442 is an apocalyptic number.

401421442 is a deficient number, since it is larger than the sum of its proper divisors (236130314).

401421442 is a wasteful number, since it uses less digits than its factorization.

401421442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11806532.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 401421442 is about 20035.5045356986. The cubic root of 401421442 is about 737.6780407845.

Adding to 401421442 its reverse (244124104), we get a palindrome (645545546).

The spelling of 401421442 in words is "four hundred one million, four hundred twenty-one thousand, four hundred forty-two".