423123423157 has 2 divisors, whose sum is σ = 423123423158. Its totient is φ = 423123423156.

The previous prime is 423123423071. The next prime is 423123423197. The reversal of 423123423157 is 751324321324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 422592305041 + 531118116 = 650071^2 + 23046^2 .

It is a cyclic number.

It is not a de Polignac number, because 423123423157 - 2⁷ = 423123423029 is a prime.

It is a super-3 number, since 3×423123423157³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423123423197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211561711578 + 211561711579.

It is an arithmetic number, because the mean of its divisors is an integer number (211561711579).

Almost surely, 2^423123423157 is an apocalyptic number.

It is an amenable number.

423123423157 is a deficient number, since it is larger than the sum of its proper divisors (1).

423123423157 is an equidigital number, since it uses as much as digits as its factorization.

423123423157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 37.

The spelling of 423123423157 in words is "four hundred twenty-three billion, one hundred twenty-three million, four hundred twenty-three thousand, one hundred fifty-seven".