400421230 has 32 divisors (see below), whose sum is σ = 832537440. Its totient is φ = 137041920.

The previous prime is 400421227. The next prime is 400421239. The reversal of 400421230 is 32124004.

It is a super-2 number, since 2×400421230² = 320674322869425800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400421239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105195 + ... + 108934.

It is an arithmetic number, because the mean of its divisors is an integer number (26016795).

Almost surely, 2^400421230 is an apocalyptic number.

400421230 is an abundant number, since it is smaller than the sum of its proper divisors (432116210).

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

400421230 is a wasteful number, since it uses less digits than its factorization.

400421230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214164.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 400421230 is about 20010.5279790414. The cubic root of 400421230 is about 737.0648464243.

Adding to 400421230 its reverse (32124004), we get a palindrome (432545234).

The spelling of 400421230 in words is "four hundred million, four hundred twenty-one thousand, two hundred thirty".