423129069 has 64 divisors (see below), whose sum is σ = 725760000. Its totient is φ = 240952320.

The previous prime is 423129059. The next prime is 423129071. The reversal of 423129069 is 960921324.

It is not a de Polignac number, because 423129069 - 2⁵ = 423129037 is a prime.

It is a super-2 number, since 2×423129069² = 358076418065613522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423129019) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 942157 + ... + 942605.

It is an arithmetic number, because the mean of its divisors is an integer number (11340000).

Almost surely, 2^423129069 is an apocalyptic number.

It is an amenable number.

423129069 is a deficient number, since it is larger than the sum of its proper divisors (302630931).

423129069 is a wasteful number, since it uses less digits than its factorization.

423129069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 423129069 is about 20570.1013366488. The cubic root of 423129069 is about 750.7424168471.

The spelling of 423129069 in words is "four hundred twenty-three million, one hundred twenty-nine thousand, sixty-nine".