400242030 has 32 divisors (see below), whose sum is σ = 1011139200. Its totient is φ = 101113632.

The previous prime is 400242013. The next prime is 400242047. The reversal of 400242030 is 30242004.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (400242013) and next prime (400242047).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350520 + ... + 351659.

It is an arithmetic number, because the mean of its divisors is an integer number (31598100).

Almost surely, 2^400242030 is an apocalyptic number.

400242030 is an abundant number, since it is smaller than the sum of its proper divisors (610897170).

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

400242030 is a wasteful number, since it uses less digits than its factorization.

400242030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702208.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 400242030 is about 20006.0498349874. The cubic root of 400242030 is about 736.9548774558.

Adding to 400242030 its reverse (30242004), we get a palindrome (430484034).

The spelling of 400242030 in words is "four hundred million, two hundred forty-two thousand, thirty".