423734137 has 2 divisors, whose sum is σ = 423734138. Its totient is φ = 423734136.

The previous prime is 423734111. The next prime is 423734149. The reversal of 423734137 is 731437324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 421234576 + 2499561 = 20524^2 + 1581^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423734137 is a prime.

It is not a weakly prime, because it can be changed into another prime (423734107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211867068 + 211867069.

It is an arithmetic number, because the mean of its divisors is an integer number (211867069).

Almost surely, 2^423734137 is an apocalyptic number.

It is an amenable number.

423734137 is a deficient number, since it is larger than the sum of its proper divisors (1).

423734137 is an equidigital number, since it uses as much as digits as its factorization.

423734137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 34.

The square root of 423734137 is about 20584.8035453341. The cubic root of 423734137 is about 751.1000964097.

The spelling of 423734137 in words is "four hundred twenty-three million, seven hundred thirty-four thousand, one hundred thirty-seven".