423123737 has 2 divisors, whose sum is σ = 423123738. Its totient is φ = 423123736.

The previous prime is 423123733. The next prime is 423123739. The reversal of 423123737 is 737321324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219662041 + 203461696 = 14821^2 + 14264^2 .

It is a cyclic number.

It is not a de Polignac number, because 423123737 - 2² = 423123733 is a prime.

Together with 423123739, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (423123733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211561868 + 211561869.

It is an arithmetic number, because the mean of its divisors is an integer number (211561869).

Almost surely, 2^423123737 is an apocalyptic number.

It is an amenable number.

423123737 is a deficient number, since it is larger than the sum of its proper divisors (1).

423123737 is an equidigital number, since it uses as much as digits as its factorization.

423123737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 32.

The square root of 423123737 is about 20569.9717306563. The cubic root of 423123737 is about 750.7392633764.

The spelling of 423123737 in words is "four hundred twenty-three million, one hundred twenty-three thousand, seven hundred thirty-seven".