42074720251 has 2 divisors, whose sum is σ = 42074720252. Its totient is φ = 42074720250.

The previous prime is 42074720201. The next prime is 42074720257. The reversal of 42074720251 is 15202747024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42074720251 - 2¹⁹ = 42074195963 is a prime.

It is not a weakly prime, because it can be changed into another prime (42074720257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21037360125 + 21037360126.

It is an arithmetic number, because the mean of its divisors is an integer number (21037360126).

Almost surely, 2^42074720251 is an apocalyptic number.

42074720251 is a deficient number, since it is larger than the sum of its proper divisors (1).

42074720251 is an equidigital number, since it uses as much as digits as its factorization.

42074720251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31360, while the sum is 34.

The spelling of 42074720251 in words is "forty-two billion, seventy-four million, seven hundred twenty thousand, two hundred fifty-one".