423501047 has 4 divisors (see below), whose sum is σ = 441914160. Its totient is φ = 405087936.

The previous prime is 423501041. The next prime is 423501073. The reversal of 423501047 is 740105324.

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 423501047 - 2²² = 419306743 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 (423501041) 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, 9206522 + ... + 9206567.

It is an arithmetic number, because the mean of its divisors is an integer number (110478540).

Almost surely, 2^423501047 is an apocalyptic number.

423501047 is a deficient number, since it is larger than the sum of its proper divisors (18413113).

423501047 is a wasteful number, since it uses less digits than its factorization.

423501047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18413112.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 423501047 is about 20579.1410656519. The cubic root of 423501047 is about 750.9623480609.

The spelling of 423501047 in words is "four hundred twenty-three million, five hundred one thousand, forty-seven".