423121785273 has 24 divisors (see below), whose sum is σ = 670087828800. Its totient is φ = 255148803360.

The previous prime is 423121785241. The next prime is 423121785287. The reversal of 423121785273 is 372587121324.

423121785273 is a `hidden beast` number, since 4 + 2 + 31 + 21 + 78 + 527 + 3 = 666.

It is not a de Polignac number, because 423121785273 - 2⁵ = 423121785241 is a prime.

It is a super-2 number, since 2×423121785273² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (423121785473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10718886 + ... + 10758287.

It is an arithmetic number, because the mean of its divisors is an integer number (27920326200).

Almost surely, 2^423121785273 is an apocalyptic number.

It is an amenable number.

423121785273 is a deficient number, since it is larger than the sum of its proper divisors (246966043527).

423121785273 is a wasteful number, since it uses less digits than its factorization.

423121785273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21477389 (or 21477386 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The spelling of 423121785273 in words is "four hundred twenty-three billion, one hundred twenty-one million, seven hundred eighty-five thousand, two hundred seventy-three".