402320242 has 8 divisors (see below), whose sum is σ = 604171116. Its totient is φ = 200929872.

The previous prime is 402320227. The next prime is 402320267. The reversal of 402320242 is 242023204.

It can be written as a sum of positive squares in 2 ways, for example, as 387735481 + 14584761 = 19691^2 + 3819^2 .

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

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, 112933 + ... + 116440.

Almost surely, 2^402320242 is an apocalyptic number.

402320242 is a deficient number, since it is larger than the sum of its proper divisors (201850874).

402320242 is a wasteful number, since it uses less digits than its factorization.

402320242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230252.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 402320242 is about 20057.9221755395. The cubic root of 402320242 is about 738.2281947467.

Adding to 402320242 its reverse (242023204), we get a palindrome (644343446).

The spelling of 402320242 in words is "four hundred two million, three hundred twenty thousand, two hundred forty-two".