402442252 has 24 divisors (see below), whose sum is σ = 711244800. Its totient is φ = 199237776.

The previous prime is 402442237. The next prime is 402442297. The reversal of 402442252 is 252244204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278949 + ... + 280387.

It is an arithmetic number, because the mean of its divisors is an integer number (29635200).

Almost surely, 2^402442252 is an apocalyptic number.

It is an amenable number.

402442252 is a deficient number, since it is larger than the sum of its proper divisors (308802548).

402442252 is a wasteful number, since it uses less digits than its factorization.

402442252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085 (or 2083 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 402442252 is about 20060.9633866372. The cubic root of 402442252 is about 738.3028136771.

Adding to 402442252 its reverse (252244204), we get a palindrome (654686456).

The spelling of 402442252 in words is "four hundred two million, four hundred forty-two thousand, two hundred fifty-two".