402203240 has 16 divisors (see below), whose sum is σ = 904957380. Its totient is φ = 160881280.

The previous prime is 402203239. The next prime is 402203251. The reversal of 402203240 is 42302204.

It can be written as a sum of positive squares in 2 ways, for example, as 397683364 + 4519876 = 19942^2 + 2126^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5027501 + ... + 5027580.

Almost surely, 2^402203240 is an apocalyptic number.

402203240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402203240 is an abundant number, since it is smaller than the sum of its proper divisors (502754140).

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

402203240 is a wasteful number, since it uses less digits than its factorization.

402203240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10055092 (or 10055088 counting only the distinct ones).

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

The square root of 402203240 is about 20055.0053602586. The cubic root of 402203240 is about 738.1566244397.

Adding to 402203240 its reverse (42302204), we get a palindrome (444505444).

The spelling of 402203240 in words is "four hundred two million, two hundred three thousand, two hundred forty".