42404406923 has 2 divisors, whose sum is σ = 42404406924. Its totient is φ = 42404406922.

The previous prime is 42404406851. The next prime is 42404406959. The reversal of 42404406923 is 32960440424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42404406923 - 2²² = 42400212619 is a prime.

It is not a weakly prime, because it can be changed into another prime (42404406973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21202203461 + 21202203462.

It is an arithmetic number, because the mean of its divisors is an integer number (21202203462).

Almost surely, 2^42404406923 is an apocalyptic number.

42404406923 is a deficient number, since it is larger than the sum of its proper divisors (1).

42404406923 is an equidigital number, since it uses as much as digits as its factorization.

42404406923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 42404406923 in words is "forty-two billion, four hundred four million, four hundred six thousand, nine hundred twenty-three".