401431223442 has 16 divisors (see below), whose sum is σ = 837769510080. Its totient is φ = 127992563952.

The previous prime is 401431223429. The next prime is 401431223497. The reversal of 401431223442 is 244322134104.

It is a super-2 number, since 2×401431223442² (a number of 24 digits) contains 22 as substring.

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, 1454460817 + ... + 1454461092.

It is an arithmetic number, because the mean of its divisors is an integer number (52360594380).

Almost surely, 2^401431223442 is an apocalyptic number.

401431223442 is an abundant number, since it is smaller than the sum of its proper divisors (436338286638).

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

401431223442 is a wasteful number, since it uses less digits than its factorization.

401431223442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2908921937.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 401431223442 its reverse (244322134104), we get a palindrome (645753357546).

The spelling of 401431223442 in words is "four hundred one billion, four hundred thirty-one million, two hundred twenty-three thousand, four hundred forty-two".