402040030 has 32 divisors (see below), whose sum is σ = 828400320. Its totient is φ = 137617920.

The previous prime is 402040013. The next prime is 402040043. The reversal of 402040030 is 30040204.

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, 41926 + ... + 50614.

It is an arithmetic number, because the mean of its divisors is an integer number (25887510).

Almost surely, 2^402040030 is an apocalyptic number.

402040030 is an abundant number, since it is smaller than the sum of its proper divisors (426360290).

402040030 is a wasteful number, since it uses less digits than its factorization.

402040030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9364.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 402040030 is about 20050.9358883819. The cubic root of 402040030 is about 738.0567654380.

Adding to 402040030 its reverse (30040204), we get a palindrome (432080234).

The spelling of 402040030 in words is "four hundred two million, forty thousand, thirty".