402440213403 has 16 divisors (see below), whose sum is σ = 596217598240. Its totient is φ = 268289032032.

The previous prime is 402440213387. The next prime is 402440213419. The reversal of 402440213403 is 304312044204.

It is a happy number.

402440213403 is a `hidden beast` number, since 4 + 0 + 2 + 4 + 40 + 213 + 403 = 666.

It is an interprime number because it is at equal distance from previous prime (402440213387) and next prime (402440213419).

It is not a de Polignac number, because 402440213403 - 2⁴ = 402440213387 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402440213503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2771025 + ... + 2912637.

It is an arithmetic number, because the mean of its divisors is an integer number (37263599890).

Almost surely, 2^402440213403 is an apocalyptic number.

402440213403 is a deficient number, since it is larger than the sum of its proper divisors (193777384837).

402440213403 is a wasteful number, since it uses less digits than its factorization.

402440213403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246875 (or 246869 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 402440213403 its reverse (304312044204), we get a palindrome (706752257607).

The spelling of 402440213403 in words is "four hundred two billion, four hundred forty million, two hundred thirteen thousand, four hundred three".