42021102859 has 2 divisors, whose sum is σ = 42021102860. Its totient is φ = 42021102858.

The previous prime is 42021102853. The next prime is 42021102883. The reversal of 42021102859 is 95820112024.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42021102859 is a prime.

It is not a weakly prime, because it can be changed into another prime (42021102853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21010551429 + 21010551430.

It is an arithmetic number, because the mean of its divisors is an integer number (21010551430).

Almost surely, 2^42021102859 is an apocalyptic number.

42021102859 is a deficient number, since it is larger than the sum of its proper divisors (1).

42021102859 is an equidigital number, since it uses as much as digits as its factorization.

42021102859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 42021102859 in words is "forty-two billion, twenty-one million, one hundred two thousand, eight hundred fifty-nine".