400421030 has 64 divisors (see below), whose sum is σ = 779563008. Its totient is φ = 147692160.

The previous prime is 400421003. The next prime is 400421069. The reversal of 400421030 is 30124004.

It is a junction number, because it is equal to n+sod(n) for n = 400420996 and 400421014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1795499 + ... + 1795721.

It is an arithmetic number, because the mean of its divisors is an integer number (12180672).

Almost surely, 2^400421030 is an apocalyptic number.

400421030 is a deficient number, since it is larger than the sum of its proper divisors (379141978).

400421030 is a wasteful number, since it uses less digits than its factorization.

400421030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 400421030 is about 20010.5229816714. The cubic root of 400421030 is about 737.0647237094.

Adding to 400421030 its reverse (30124004), we get a palindrome (430545034).

The spelling of 400421030 in words is "four hundred million, four hundred twenty-one thousand, thirty".