42166604323 has 2 divisors, whose sum is σ = 42166604324. Its totient is φ = 42166604322.

The previous prime is 42166604299. The next prime is 42166604327. The reversal of 42166604323 is 32340666124.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42166604323 is a prime.

It is not a weakly prime, because it can be changed into another prime (42166604327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21083302161 + 21083302162.

It is an arithmetic number, because the mean of its divisors is an integer number (21083302162).

Almost surely, 2^42166604323 is an apocalyptic number.

42166604323 is a deficient number, since it is larger than the sum of its proper divisors (1).

42166604323 is an equidigital number, since it uses as much as digits as its factorization.

42166604323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 42166604323 in words is "forty-two billion, one hundred sixty-six million, six hundred four thousand, three hundred twenty-three".