400421130 has 16 divisors (see below), whose sum is σ = 961010784. Its totient is φ = 106778960.

The previous prime is 400421123. The next prime is 400421149. The reversal of 400421130 is 31124004.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6673656 + ... + 6673715.

It is an arithmetic number, because the mean of its divisors is an integer number (60063174).

Almost surely, 2^400421130 is an apocalyptic number.

400421130 is an abundant number, since it is smaller than the sum of its proper divisors (560589654).

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

400421130 is a wasteful number, since it uses less digits than its factorization.

400421130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13347381.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 400421130 is about 20010.5254803566. The cubic root of 400421130 is about 737.0647850669.

Adding to 400421130 its reverse (31124004), we get a palindrome (431545134).

The spelling of 400421130 in words is "four hundred million, four hundred twenty-one thousand, one hundred thirty".