400132322420 has 12 divisors (see below), whose sum is σ = 840277877124. Its totient is φ = 160052928960.

The previous prime is 400132322389. The next prime is 400132322449. The reversal of 400132322420 is 24223231004.

It can be written as a sum of positive squares in 2 ways, for example, as 45766900624 + 354365421796 = 213932^2 + 595286^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10003308041 + ... + 10003308080.

It is an arithmetic number, because the mean of its divisors is an integer number (70023156427).

Almost surely, 2^400132322420 is an apocalyptic number.

It is an amenable number.

400132322420 is an abundant number, since it is smaller than the sum of its proper divisors (440145554704).

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

400132322420 is a wasteful number, since it uses less digits than its factorization.

400132322420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20006616130 (or 20006616128 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 400132322420 its reverse (24223231004), we get a palindrome (424355553424).

The spelling of 400132322420 in words is "four hundred billion, one hundred thirty-two million, three hundred twenty-two thousand, four hundred twenty".