400131003354242 has 16 divisors (see below), whose sum is σ = 604076095943160. Its totient is φ = 198772543876608.

The previous prime is 400131003354191. The next prime is 400131003354253. The reversal of 400131003354242 is 242453300131004.

It can be written as a sum of positive squares in 4 ways, for example, as 344300234298241 + 55830769056001 = 18555329^2 + 7471999^2 .

It is a junction number, because it is equal to n+sod(n) for n = 400131003354199 and 400131003354208.

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, 56440817 + ... + 63133412.

Almost surely, 2^{400131003354242} is an apocalyptic number.

400131003354242 is a deficient number, since it is larger than the sum of its proper divisors (203945092588918).

400131003354242 is a wasteful number, since it uses less digits than its factorization.

400131003354242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119585045.

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 400131003354242 its reverse (242453300131004), we get a palindrome (642584303485246).

The spelling of 400131003354242 in words is "four hundred trillion, one hundred thirty-one billion, three million, three hundred fifty-four thousand, two hundred forty-two".