42244390087 has 2 divisors, whose sum is σ = 42244390088. Its totient is φ = 42244390086.

The previous prime is 42244390003. The next prime is 42244390127. The reversal of 42244390087 is 78009344224.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42244390087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42244390687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21122195043 + 21122195044.

It is an arithmetic number, because the mean of its divisors is an integer number (21122195044).

Almost surely, 2^42244390087 is an apocalyptic number.

42244390087 is a deficient number, since it is larger than the sum of its proper divisors (1).

42244390087 is an equidigital number, since it uses as much as digits as its factorization.

42244390087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 42244390087 in words is "forty-two billion, two hundred forty-four million, three hundred ninety thousand, eighty-seven".