42086453021 has 2 divisors, whose sum is σ = 42086453022. Its totient is φ = 42086453020.

The previous prime is 42086452981. The next prime is 42086453039. The reversal of 42086453021 is 12035468024.

42086453021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40215890521 + 1870562500 = 200539^2 + 43250^2 .

It is a cyclic number.

It is not a de Polignac number, because 42086453021 - 2²² = 42082258717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42086453041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21043226510 + 21043226511.

It is an arithmetic number, because the mean of its divisors is an integer number (21043226511).

Almost surely, 2^42086453021 is an apocalyptic number.

It is an amenable number.

42086453021 is a deficient number, since it is larger than the sum of its proper divisors (1).

42086453021 is an equidigital number, since it uses as much as digits as its factorization.

42086453021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 42086453021 in words is "forty-two billion, eighty-six million, four hundred fifty-three thousand, twenty-one".