400431134221142 has 4 divisors (see below), whose sum is σ = 600646701331716. Its totient is φ = 200215567110570.

The previous prime is 400431134221123. The next prime is 400431134221171. The reversal of 400431134221142 is 241122431134004.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 400431134221099 and 400431134221108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100107783555284 + ... + 100107783555287.

It is an arithmetic number, because the mean of its divisors is an integer number (150161675332929).

Almost surely, 2^{400431134221142} is an apocalyptic number.

400431134221142 is a deficient number, since it is larger than the sum of its proper divisors (200215567110574).

400431134221142 is a wasteful number, since it uses less digits than its factorization.

400431134221142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200215567110573.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 400431134221142 its reverse (241122431134004), we get a palindrome (641553565355146).

The spelling of 400431134221142 in words is "four hundred trillion, four hundred thirty-one billion, one hundred thirty-four million, two hundred twenty-one thousand, one hundred forty-two".