400124231442 has 24 divisors (see below), whose sum is σ = 933623207244. Its totient is φ = 123115148064.

The previous prime is 400124231413. The next prime is 400124231443. The reversal of 400124231442 is 244132421004.

400124231442 is a `hidden beast` number, since 400 + 1 + 24 + 231 + 4 + 4 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 339293435121 + 60830796321 = 582489^2 + 246639^2 .

It is not an unprimeable number, because it can be changed into a prime (400124231443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 854966073 + ... + 854966540.

Almost surely, 2^400124231442 is an apocalyptic number.

400124231442 is an abundant number, since it is smaller than the sum of its proper divisors (533498975802).

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

400124231442 is a wasteful number, since it uses less digits than its factorization.

400124231442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709932634 (or 1709932631 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 400124231442 its reverse (244132421004), we get a palindrome (644256652446).

The spelling of 400124231442 in words is "four hundred billion, one hundred twenty-four million, two hundred thirty-one thousand, four hundred forty-two".