400421304750 has 64 divisors (see below), whose sum is σ = 999540449856. Its totient is φ = 106769520000.

The previous prime is 400421304737. The next prime is 400421304791. The reversal of 400421304750 is 57403124004.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13711164 + ... + 13740336.

It is an arithmetic number, because the mean of its divisors is an integer number (15617819529).

Almost surely, 2^400421304750 is an apocalyptic number.

400421304750 is an abundant number, since it is smaller than the sum of its proper divisors (599119145106).

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

400421304750 is a wasteful number, since it uses less digits than its factorization.

400421304750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47494 (or 47484 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

Adding to 400421304750 its reverse (57403124004), we get a palindrome (457824428754).

The spelling of 400421304750 in words is "four hundred billion, four hundred twenty-one million, three hundred four thousand, seven hundred fifty".