400042032123324 has 48 divisors (see below), whose sum is σ = 934236017396640. Its totient is φ = 133232403333120.

The previous prime is 400042032123323. The next prime is 400042032123353. The reversal of 400042032123324 is 423321230240004.

It is a super-2 number, since 2×400042032123324² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400042032123291 and 400042032123300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400042032123323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1145050492 + ... + 1145399804.

It is an arithmetic number, because the mean of its divisors is an integer number (19463250362430).

Almost surely, 2^{400042032123324} is an apocalyptic number.

It is an amenable number.

400042032123324 is an abundant number, since it is smaller than the sum of its proper divisors (534193985273316).

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

400042032123324 is a wasteful number, since it uses less digits than its factorization.

400042032123324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431310 (or 431308 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 400042032123324 its reverse (423321230240004), we get a palindrome (823363262363328).

The spelling of 400042032123324 in words is "four hundred trillion, forty-two billion, thirty-two million, one hundred twenty-three thousand, three hundred twenty-four".