423167521 has 8 divisors (see below), whose sum is σ = 483899904. Its totient is φ = 362505120.

The previous prime is 423167491. The next prime is 423167527. The reversal of 423167521 is 125761324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423167521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423167527) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 3820 + ... + 29341.

It is an arithmetic number, because the mean of its divisors is an integer number (60487488).

Almost surely, 2^423167521 is an apocalyptic number.

It is an amenable number.

423167521 is a deficient number, since it is larger than the sum of its proper divisors (60732383).

423167521 is a wasteful number, since it uses less digits than its factorization.

423167521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34991.

The product of its digits is 10080, while the sum is 31.

The square root of 423167521 is about 20571.0359729402. The cubic root of 423167521 is about 750.7651574836.

The spelling of 423167521 in words is "four hundred twenty-three million, one hundred sixty-seven thousand, five hundred twenty-one".