402442403 has 16 divisors (see below), whose sum is σ = 454087680. Its totient is φ = 353354400.

The previous prime is 402442393. The next prime is 402442421. The reversal of 402442403 is 304244204.

It is a cyclic number.

It is not a de Polignac number, because 402442403 - 2¹⁴ = 402426019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402442423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251201 + ... + 252797.

It is an arithmetic number, because the mean of its divisors is an integer number (28380480).

Almost surely, 2^402442403 is an apocalyptic number.

402442403 is a deficient number, since it is larger than the sum of its proper divisors (51645277).

402442403 is a wasteful number, since it uses less digits than its factorization.

402442403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2378.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 402442403 is about 20060.9671501650. The cubic root of 402442403 is about 738.3029060164.

Adding to 402442403 its reverse (304244204), we get a palindrome (706686607).

The spelling of 402442403 in words is "four hundred two million, four hundred forty-two thousand, four hundred three".