402422423 has 16 divisors (see below), whose sum is σ = 444554880. Its totient is φ = 361930464.

The previous prime is 402422417. The next prime is 402422443. The reversal of 402422423 is 324224204.

It is a cyclic number.

It is not a de Polignac number, because 402422423 - 2⁶ = 402422359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402422443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345440 + ... + 346602.

It is an arithmetic number, because the mean of its divisors is an integer number (27784680).

Almost surely, 2^402422423 is an apocalyptic number.

402422423 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

402422423 is a deficient number, since it is larger than the sum of its proper divisors (42132457).

402422423 is a wasteful number, since it uses less digits than its factorization.

402422423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838.

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

The square root of 402422423 is about 20060.4691620111. The cubic root of 402422423 is about 738.2906876748.

Adding to 402422423 its reverse (324224204), we get a palindrome (726646627).

The spelling of 402422423 in words is "four hundred two million, four hundred twenty-two thousand, four hundred twenty-three".