423121168 has 10 divisors (see below), whose sum is σ = 819797294. Its totient is φ = 211560576.

The previous prime is 423121141. The next prime is 423121169. The reversal of 423121168 is 861121324.

It can be written as a sum of positive squares in only one way, i.e., 268566544 + 154554624 = 16388^2 + 12432^2 .

It is not an unprimeable number, because it can be changed into a prime (423121169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13222521 + ... + 13222552.

Almost surely, 2^423121168 is an apocalyptic number.

It is an amenable number.

423121168 is a deficient number, since it is larger than the sum of its proper divisors (396676126).

423121168 is a wasteful number, since it uses less digits than its factorization.

423121168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26445081 (or 26445075 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 423121168 is about 20569.9092851670. The cubic root of 423121168 is about 750.7377439997.

The spelling of 423121168 in words is "four hundred twenty-three million, one hundred twenty-one thousand, one hundred sixty-eight".