402203042 has 8 divisors (see below), whose sum is σ = 603634332. Its totient is φ = 200991600.

The previous prime is 402203041. The next prime is 402203057. The reversal of 402203042 is 240302204.

It can be written as a sum of positive squares in 2 ways, for example, as 372837481 + 29365561 = 19309^2 + 5419^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 402203042.

It is not an unprimeable number, because it can be changed into a prime (402203041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50309 + ... + 57752.

Almost surely, 2^402203042 is an apocalyptic number.

402203042 is a deficient number, since it is larger than the sum of its proper divisors (201431290).

402203042 is a wasteful number, since it uses less digits than its factorization.

402203042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109924.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 402203042 is about 20055.0004238345. Note that the first 3 decimals coincide. The cubic root of 402203042 is about 738.1565033111.

Subtracting from 402203042 its sum of digits (17), we obtain a square (402203025 = 20055²).

Adding to 402203042 its reverse (240302204), we get a palindrome (642505246).

The spelling of 402203042 in words is "four hundred two million, two hundred three thousand, forty-two".