402422403 has 4 divisors (see below), whose sum is σ = 536563208. Its totient is φ = 268281600.

The previous prime is 402422401. The next prime is 402422411. The reversal of 402422403 is 304224204.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 402422403 - 2¹ = 402422401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402422403.

It is not an unprimeable number, because it can be changed into a prime (402422401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67070398 + ... + 67070403.

It is an arithmetic number, because the mean of its divisors is an integer number (134140802).

Almost surely, 2^402422403 is an apocalyptic number.

402422403 is a deficient number, since it is larger than the sum of its proper divisors (134140805).

402422403 is a wasteful number, since it uses less digits than its factorization.

402422403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134140804.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 402422403 is about 20060.4686635183. The cubic root of 402422403 is about 738.2906754441.

Adding to 402422403 its reverse (304224204), we get a palindrome (706646607).

The spelling of 402422403 in words is "four hundred two million, four hundred twenty-two thousand, four hundred three".