402004245 has 8 divisors (see below), whose sum is σ = 643206816. Its totient is φ = 214402256.

The previous prime is 402004217. The next prime is 402004247. The reversal of 402004245 is 542400204.

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 402004245 - 2⁸ = 402003989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402004247) 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, 13400127 + ... + 13400156.

It is an arithmetic number, because the mean of its divisors is an integer number (80400852).

Almost surely, 2^402004245 is an apocalyptic number.

It is an amenable number.

402004245 is a deficient number, since it is larger than the sum of its proper divisors (241202571).

402004245 is a wasteful number, since it uses less digits than its factorization.

402004245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26800291.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 402004245 is about 20050.0435161623. The cubic root of 402004245 is about 738.0348670008.

Adding to 402004245 its reverse (542400204), we get a palindrome (944404449).

The spelling of 402004245 in words is "four hundred two million, four thousand, two hundred forty-five".