401204340542 has 16 divisors (see below), whose sum is σ = 638915243472. Its totient is φ = 188295864960.

The previous prime is 401204340533. The next prime is 401204340601. The reversal of 401204340542 is 245043402104.

It is a super-2 number, since 2×401204340542² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 15805184 + ... + 15830547.

It is an arithmetic number, because the mean of its divisors is an integer number (39932202717).

Almost surely, 2^401204340542 is an apocalyptic number.

401204340542 is a deficient number, since it is larger than the sum of its proper divisors (237710902930).

401204340542 is a wasteful number, since it uses less digits than its factorization.

401204340542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31636123.

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 401204340542 its reverse (245043402104), we get a palindrome (646247742646).

The spelling of 401204340542 in words is "four hundred one billion, two hundred four million, three hundred forty thousand, five hundred forty-two".