42417213973 has 2 divisors, whose sum is σ = 42417213974. Its totient is φ = 42417213972.

The previous prime is 42417213959. The next prime is 42417213989. The reversal of 42417213973 is 37931271424.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35654125329 + 6763088644 = 188823^2 + 82238^2 .

It is a cyclic number.

It is not a de Polignac number, because 42417213973 - 2²⁵ = 42383659541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42417213953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21208606986 + 21208606987.

It is an arithmetic number, because the mean of its divisors is an integer number (21208606987).

Almost surely, 2^42417213973 is an apocalyptic number.

It is an amenable number.

42417213973 is a deficient number, since it is larger than the sum of its proper divisors (1).

42417213973 is an equidigital number, since it uses as much as digits as its factorization.

42417213973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 43.

The spelling of 42417213973 in words is "forty-two billion, four hundred seventeen million, two hundred thirteen thousand, nine hundred seventy-three".