42876000371621 has 2 divisors, whose sum is σ = 42876000371622. Its totient is φ = 42876000371620.

The previous prime is 42876000371593. The next prime is 42876000371627. The reversal of 42876000371621 is 12617300067824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24077176922500 + 18798823449121 = 4906850^2 + 4335761^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42876000371621 is a prime.

It is a super-4 number, since 4×42876000371621⁴ (a number of 56 digits) contains 4444 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42876000371627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21438000185810 + 21438000185811.

It is an arithmetic number, because the mean of its divisors is an integer number (21438000185811).

Almost surely, 2^{42876000371621} is an apocalyptic number.

It is an amenable number.

42876000371621 is a deficient number, since it is larger than the sum of its proper divisors (1).

42876000371621 is an equidigital number, since it uses as much as digits as its factorization.

42876000371621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 42876000371621 in words is "forty-two trillion, eight hundred seventy-six billion, three hundred seventy-one thousand, six hundred twenty-one".