400124030 has 64 divisors (see below), whose sum is σ = 762810048. Its totient is φ = 150958080.

The previous prime is 400124027. The next prime is 400124033. The reversal of 400124030 is 30421004.

It is an interprime number because it is at equal distance from previous prime (400124027) and next prime (400124033).

It is a junction number, because it is equal to n+sod(n) for n = 400123996 and 400124014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400124033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2210540 + ... + 2210720.

It is an arithmetic number, because the mean of its divisors is an integer number (11918907).

Almost surely, 2^400124030 is an apocalyptic number.

400124030 is a deficient number, since it is larger than the sum of its proper divisors (362686018).

400124030 is a wasteful number, since it uses less digits than its factorization.

400124030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381.

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

The square root of 400124030 is about 20003.1005096710. The cubic root of 400124030 is about 736.8824469293.

Adding to 400124030 its reverse (30421004), we get a palindrome (430545034).

The spelling of 400124030 in words is "four hundred million, one hundred twenty-four thousand, thirty".