402120303 has 16 divisors (see below), whose sum is σ = 579059040. Its totient is φ = 246749184.

The previous prime is 402120287. The next prime is 402120311. The reversal of 402120303 is 303021204.

It is not a de Polignac number, because 402120303 - 2⁴ = 402120287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402120373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 838 + ... + 28371.

It is an arithmetic number, because the mean of its divisors is an integer number (36191190).

Almost surely, 2^402120303 is an apocalyptic number.

402120303 is a deficient number, since it is larger than the sum of its proper divisors (176938737).

402120303 is a wasteful number, since it uses less digits than its factorization.

402120303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29578.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 402120303 is about 20052.9375154864. The cubic root of 402120303 is about 738.1058833397.

Adding to 402120303 its reverse (303021204), we get a palindrome (705141507).

Subtracting from 402120303 its reverse (303021204), we obtain a palindrome (99099099).

The spelling of 402120303 in words is "four hundred two million, one hundred twenty thousand, three hundred three".