402203423 has 4 divisors (see below), whose sum is σ = 402364128. Its totient is φ = 402042720.

The previous prime is 402203387. The next prime is 402203429. The reversal of 402203423 is 324302204.

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

It is a cyclic number.

It is not a de Polignac number, because 402203423 - 2⁶ = 402203359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402203395 and 402203404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402203429) 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, 76538 + ... + 81623.

It is an arithmetic number, because the mean of its divisors is an integer number (100591032).

Almost surely, 2^402203423 is an apocalyptic number.

402203423 is a deficient number, since it is larger than the sum of its proper divisors (160705).

402203423 is a wasteful number, since it uses less digits than its factorization.

402203423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160704.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 402203423 is about 20055.0099227101. The cubic root of 402203423 is about 738.1567363919.

Adding to 402203423 its reverse (324302204), we get a palindrome (726505627).

The spelling of 402203423 in words is "four hundred two million, two hundred three thousand, four hundred twenty-three".