400342244200 has 48 divisors (see below), whose sum is σ = 936724426380. Its totient is φ = 159116904960.

The previous prime is 400342244173. The next prime is 400342244219. The reversal of 400342244200 is 2442243004.

It can be written as a sum of positive squares in 6 ways, for example, as 26749910916 + 373592333284 = 163554^2 + 611222^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6343477 + ... + 6406276.

Almost surely, 2^400342244200 is an apocalyptic number.

400342244200 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400342244200 is an abundant number, since it is smaller than the sum of its proper divisors (536382182180).

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

400342244200 is a wasteful number, since it uses less digits than its factorization.

400342244200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12749926 (or 12749917 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

Adding to 400342244200 its reverse (2442243004), we get a palindrome (402784487204).

The spelling of 400342244200 in words is "four hundred billion, three hundred forty-two million, two hundred forty-four thousand, two hundred".