400123030 has 16 divisors (see below), whose sum is σ = 720657504. Its totient is φ = 159952320.

The previous prime is 400123027. The next prime is 400123093. The reversal of 400123030 is 30321004.

It is a self number, because there is not a number n which added to its sum of digits gives 400123030.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6610 + ... + 29050.

It is an arithmetic number, because the mean of its divisors is an integer number (45041094).

Almost surely, 2^400123030 is an apocalyptic number.

400123030 is a deficient number, since it is larger than the sum of its proper divisors (320534474).

400123030 is a wasteful number, since it uses less digits than its factorization.

400123030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24231.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 400123030 is about 20003.0755135304. The cubic root of 400123030 is about 736.8818330504.

Adding to 400123030 its reverse (30321004), we get a palindrome (430444034).

The spelling of 400123030 in words is "four hundred million, one hundred twenty-three thousand, thirty".