423400507 has 2 divisors, whose sum is σ = 423400508. Its totient is φ = 423400506.

The previous prime is 423400463. The next prime is 423400519. The reversal of 423400507 is 705004324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423400507 - 2²³ = 415011899 is a prime.

It is not a weakly prime, because it can be changed into another prime (423400577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211700253 + 211700254.

It is an arithmetic number, because the mean of its divisors is an integer number (211700254).

Almost surely, 2^423400507 is an apocalyptic number.

423400507 is a deficient number, since it is larger than the sum of its proper divisors (1).

423400507 is an equidigital number, since it uses as much as digits as its factorization.

423400507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 423400507 is about 20576.6981559239. The cubic root of 423400507 is about 750.9029167005.

The spelling of 423400507 in words is "four hundred twenty-three million, four hundred thousand, five hundred seven".