423334157 has 2 divisors, whose sum is σ = 423334158. Its totient is φ = 423334156.

The previous prime is 423334151. The next prime is 423334237. The reversal of 423334157 is 751433324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 357172201 + 66161956 = 18899^2 + 8134^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423334157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423334151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211667078 + 211667079.

It is an arithmetic number, because the mean of its divisors is an integer number (211667079).

Almost surely, 2^423334157 is an apocalyptic number.

It is an amenable number.

423334157 is a deficient number, since it is larger than the sum of its proper divisors (1).

423334157 is an equidigital number, since it uses as much as digits as its factorization.

423334157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 32.

The square root of 423334157 is about 20575.0858321417. The cubic root of 423334157 is about 750.8636906325.

The spelling of 423334157 in words is "four hundred twenty-three million, three hundred thirty-four thousand, one hundred fifty-seven".