402242313 has 8 divisors (see below), whose sum is σ = 585079776. Its totient is φ = 243783200.

The previous prime is 402242299. The next prime is 402242317. The reversal of 402242313 is 313242204.

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

It is a cyclic number.

It is not a de Polignac number, because 402242313 - 2¹³ = 402234121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402242313.

It is not an unprimeable number, because it can be changed into a prime (402242317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6094548 + ... + 6094613.

It is an arithmetic number, because the mean of its divisors is an integer number (73134972).

Almost surely, 2^402242313 is an apocalyptic number.

It is an amenable number.

402242313 is a deficient number, since it is larger than the sum of its proper divisors (182837463).

402242313 is a wasteful number, since it uses less digits than its factorization.

402242313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12189175.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 402242313 is about 20055.9794824386. The cubic root of 402242313 is about 738.1805269986.

Adding to 402242313 its reverse (313242204), we get a palindrome (715484517).

The spelling of 402242313 in words is "four hundred two million, two hundred forty-two thousand, three hundred thirteen".