423145499 has 12 divisors (see below), whose sum is σ = 495117936. Its totient is φ = 354250512.

The previous prime is 423145493. The next prime is 423145501. The reversal of 423145499 is 994541324.

It is not a de Polignac number, because 423145499 - 2⁸ = 423145243 is a prime.

It is a super-2 number, since 2×423145499² = 358104226647918002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423145493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3404 + ... + 29289.

It is an arithmetic number, because the mean of its divisors is an integer number (41259828).

Almost surely, 2^423145499 is an apocalyptic number.

423145499 is a deficient number, since it is larger than the sum of its proper divisors (71972437).

423145499 is an equidigital number, since it uses as much as digits as its factorization.

423145499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32786 (or 32743 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The square root of 423145499 is about 20570.5006988163. The cubic root of 423145499 is about 750.7521337705.

The spelling of 423145499 in words is "four hundred twenty-three million, one hundred forty-five thousand, four hundred ninety-nine".