402400245 has 32 divisors (see below), whose sum is σ = 695020032. Its totient is φ = 197632512.

The previous prime is 402400223. The next prime is 402400267. The reversal of 402400245 is 542004204.

It is an interprime number because it is at equal distance from previous prime (402400223) and next prime (402400267).

It is not a de Polignac number, because 402400245 - 2⁸ = 402399989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88057 + ... + 92513.

It is an arithmetic number, because the mean of its divisors is an integer number (21719376).

Almost surely, 2^402400245 is an apocalyptic number.

It is an amenable number.

402400245 is a deficient number, since it is larger than the sum of its proper divisors (292619787).

402400245 is a wasteful number, since it uses less digits than its factorization.

402400245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4941.

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

The square root of 402400245 is about 20059.9163756981. The cubic root of 402400245 is about 738.2771247198.

Adding to 402400245 its reverse (542004204), we get a palindrome (944404449).

The spelling of 402400245 in words is "four hundred two million, four hundred thousand, two hundred forty-five".