400343124 has 12 divisors (see below), whose sum is σ = 934133984. Its totient is φ = 133447704.

The previous prime is 400343117. The next prime is 400343131. The reversal of 400343124 is 421343004.

It is an interprime number because it is at equal distance from previous prime (400343117) and next prime (400343131).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 400343124.

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, 16680952 + ... + 16680975.

Almost surely, 2^400343124 is an apocalyptic number.

It is an amenable number.

400343124 is an abundant number, since it is smaller than the sum of its proper divisors (533790860).

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

400343124 is a wasteful number, since it uses less digits than its factorization.

400343124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33361934 (or 33361932 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 400343124 is about 20008.5762611936. The cubic root of 400343124 is about 737.0169194530.

Adding to 400343124 its reverse (421343004), we get a palindrome (821686128).

The spelling of 400343124 in words is "four hundred million, three hundred forty-three thousand, one hundred twenty-four".