401402042 has 16 divisors (see below), whose sum is σ = 607813632. Its totient is φ = 198802800.

The previous prime is 401401997. The next prime is 401402059. The reversal of 401402042 is 240204104.

It is a super-2 number, since 2×401402042² = 322247198643539528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401402042.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291668 + ... + 293040.

It is an arithmetic number, because the mean of its divisors is an integer number (37988352).

Almost surely, 2^401402042 is an apocalyptic number.

401402042 is a deficient number, since it is larger than the sum of its proper divisors (206411590).

401402042 is a wasteful number, since it uses less digits than its factorization.

401402042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 401402042 is about 20035.0203893083. The cubic root of 401402042 is about 737.6661570276. Note that the first 3 decimals are identical.

Adding to 401402042 its reverse (240204104), we get a palindrome (641606146).

The spelling of 401402042 in words is "four hundred one million, four hundred two thousand, forty-two".