421355010187 has 2 divisors, whose sum is σ = 421355010188. Its totient is φ = 421355010186.

The previous prime is 421355010149. The next prime is 421355010203. The reversal of 421355010187 is 781010553124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421355010187 is a prime.

It is not a weakly prime, because it can be changed into another prime (421355010787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210677505093 + 210677505094.

It is an arithmetic number, because the mean of its divisors is an integer number (210677505094).

Almost surely, 2^421355010187 is an apocalyptic number.

421355010187 is a deficient number, since it is larger than the sum of its proper divisors (1).

421355010187 is an equidigital number, since it uses as much as digits as its factorization.

421355010187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 421355010187 in words is "four hundred twenty-one billion, three hundred fifty-five million, ten thousand, one hundred eighty-seven".