402345005 has 8 divisors (see below), whose sum is σ = 483135000. Its totient is φ = 321662016.

The previous prime is 402344981. The next prime is 402345011. The reversal of 402345005 is 500543204.

It can be written as a sum of positive squares in 4 ways, for example, as 3104644 + 399240361 = 1762^2 + 19981^2 .

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 402345005 - 2⁶ = 402344941 is a prime.

It is a congruent number.

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, 18230 + ... + 33719.

It is an arithmetic number, because the mean of its divisors is an integer number (60391875).

Almost surely, 2^402345005 is an apocalyptic number.

It is an amenable number.

402345005 is a deficient number, since it is larger than the sum of its proper divisors (80789995).

402345005 is a wasteful number, since it uses less digits than its factorization.

402345005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53503.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 402345005 is about 20058.5394533102. The cubic root of 402345005 is about 738.2433405334.

Adding to 402345005 its reverse (500543204), we get a palindrome (902888209).

The spelling of 402345005 in words is "four hundred two million, three hundred forty-five thousand, five".