42120787967983 has 2 divisors, whose sum is σ = 42120787967984. Its totient is φ = 42120787967982.

The previous prime is 42120787967957. The next prime is 42120787968001. The reversal of 42120787967983 is 38976978702124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42120787967983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42120787947983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21060393983991 + 21060393983992.

It is an arithmetic number, because the mean of its divisors is an integer number (21060393983992).

Almost surely, 2^{42120787967983} is an apocalyptic number.

42120787967983 is a deficient number, since it is larger than the sum of its proper divisors (1).

42120787967983 is an equidigital number, since it uses as much as digits as its factorization.

42120787967983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512096256, while the sum is 73.

The spelling of 42120787967983 in words is "forty-two trillion, one hundred twenty billion, seven hundred eighty-seven million, nine hundred sixty-seven thousand, nine hundred eighty-three".