400231042131124 has 12 divisors (see below), whose sum is σ = 700405681904964. Its totient is φ = 200115133015424.

The previous prime is 400231042131119. The next prime is 400231042131139. The reversal of 400231042131124 is 421131240132004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 46655293099024 + 353575749032100 = 6830468^2 + 18803610^2 .

It is a junction number, because it is equal to n+sod(n) for n = 400231042131092 and 400231042131101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94685707 + ... + 98822290.

It is an arithmetic number, because the mean of its divisors is an integer number (58367140158747).

Almost surely, 2^{400231042131124} is an apocalyptic number.

It is an amenable number.

400231042131124 is a deficient number, since it is larger than the sum of its proper divisors (300174639773840).

400231042131124 is a wasteful number, since it uses less digits than its factorization.

400231042131124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194025074 (or 194025072 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 400231042131124 its reverse (421131240132004), we get a palindrome (821362282263128).

The spelling of 400231042131124 in words is "four hundred trillion, two hundred thirty-one billion, forty-two million, one hundred thirty-one thousand, one hundred twenty-four".