421346542987 has 2 divisors, whose sum is σ = 421346542988. Its totient is φ = 421346542986.

The previous prime is 421346542943. The next prime is 421346543053. The reversal of 421346542987 is 789245643124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421346542987 - 2¹¹ = 421346540939 is a prime.

It is not a weakly prime, because it can be changed into another prime (421386542987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210673271493 + 210673271494.

It is an arithmetic number, because the mean of its divisors is an integer number (210673271494).

Almost surely, 2^421346542987 is an apocalyptic number.

421346542987 is a deficient number, since it is larger than the sum of its proper divisors (1).

421346542987 is an equidigital number, since it uses as much as digits as its factorization.

421346542987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11612160, while the sum is 55.

The spelling of 421346542987 in words is "four hundred twenty-one billion, three hundred forty-six million, five hundred forty-two thousand, nine hundred eighty-seven".