402042503 has 16 divisors (see below), whose sum is σ = 442957824. Its totient is φ = 363242880.

The previous prime is 402042497. The next prime is 402042523. The reversal of 402042503 is 305240204.

It is a cyclic number.

It is not a de Polignac number, because 402042503 - 2²⁰ = 400993927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402042523) by changing a digit.

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, 63926 + ... + 69932.

It is an arithmetic number, because the mean of its divisors is an integer number (27684864).

Almost surely, 2^402042503 is an apocalyptic number.

402042503 is a deficient number, since it is larger than the sum of its proper divisors (40915321).

402042503 is a wasteful number, since it uses less digits than its factorization.

402042503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6182.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 402042503 is about 20050.9975562315. The cubic root of 402042503 is about 738.0582787289.

Adding to 402042503 its reverse (305240204), we get a palindrome (707282707).

The spelling of 402042503 in words is "four hundred two million, forty-two thousand, five hundred three".