402306053 has 4 divisors (see below), whose sum is σ = 402429600. Its totient is φ = 402182508.

The previous prime is 402306043. The next prime is 402306059. The reversal of 402306053 is 350603204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402306053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402306059) 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, 56753 + ... + 63446.

It is an arithmetic number, because the mean of its divisors is an integer number (100607400).

Almost surely, 2^402306053 is an apocalyptic number.

It is an amenable number.

402306053 is a deficient number, since it is larger than the sum of its proper divisors (123547).

402306053 is a wasteful number, since it uses less digits than its factorization.

402306053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123546.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 402306053 is about 20057.5684717764. The cubic root of 402306053 is about 738.2195160525.

Adding to 402306053 its reverse (350603204), we get a palindrome (752909257).

The spelling of 402306053 in words is "four hundred two million, three hundred six thousand, fifty-three".