420592187887 has 2 divisors, whose sum is σ = 420592187888. Its totient is φ = 420592187886.

The previous prime is 420592187863. The next prime is 420592187891. The reversal of 420592187887 is 788781295024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420592187887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420592187857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210296093943 + 210296093944.

It is an arithmetic number, because the mean of its divisors is an integer number (210296093944).

Almost surely, 2^420592187887 is an apocalyptic number.

420592187887 is a deficient number, since it is larger than the sum of its proper divisors (1).

420592187887 is an equidigital number, since it uses as much as digits as its factorization.

420592187887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18063360, while the sum is 61.

The spelling of 420592187887 in words is "four hundred twenty billion, five hundred ninety-two million, one hundred eighty-seven thousand, eight hundred eighty-seven".