423123202 has 4 divisors (see below), whose sum is σ = 634684806. Its totient is φ = 211561600.

The previous prime is 423123191. The next prime is 423123271. The reversal of 423123202 is 202321324.

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

It can be written as a sum of positive squares in only one way, i.e., 314317441 + 108805761 = 17729^2 + 10431^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 423123202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105780799 + ... + 105780802.

Almost surely, 2^423123202 is an apocalyptic number.

423123202 is a deficient number, since it is larger than the sum of its proper divisors (211561604).

423123202 is a wasteful number, since it uses less digits than its factorization.

423123202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211561603.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 423123202 is about 20569.9587262590. The cubic root of 423123202 is about 750.7389469633.

Adding to 423123202 its reverse (202321324), we get a palindrome (625444526).

The spelling of 423123202 in words is "four hundred twenty-three million, one hundred twenty-three thousand, two hundred two".