42102277577 has 2 divisors, whose sum is σ = 42102277578. Its totient is φ = 42102277576.

The previous prime is 42102277499. The next prime is 42102277589. The reversal of 42102277577 is 77577220124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40689344656 + 1412932921 = 201716^2 + 37589^2 .

It is a cyclic number.

It is not a de Polignac number, because 42102277577 - 2¹⁰ = 42102276553 is a prime.

It is not a weakly prime, because it can be changed into another prime (42102271577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21051138788 + 21051138789.

It is an arithmetic number, because the mean of its divisors is an integer number (21051138789).

Almost surely, 2^42102277577 is an apocalyptic number.

It is an amenable number.

42102277577 is a deficient number, since it is larger than the sum of its proper divisors (1).

42102277577 is an equidigital number, since it uses as much as digits as its factorization.

42102277577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384160, while the sum is 44.

The spelling of 42102277577 in words is "forty-two billion, one hundred two million, two hundred seventy-seven thousand, five hundred seventy-seven".