421259039 has 2 divisors, whose sum is σ = 421259040. Its totient is φ = 421259038.

The previous prime is 421259009. The next prime is 421259063. The reversal of 421259039 is 930952124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421259039 - 2²⁰ = 420210463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421259009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210629519 + 210629520.

It is an arithmetic number, because the mean of its divisors is an integer number (210629520).

Almost surely, 2^421259039 is an apocalyptic number.

421259039 is a deficient number, since it is larger than the sum of its proper divisors (1).

421259039 is an equidigital number, since it uses as much as digits as its factorization.

421259039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 421259039 is about 20524.5959521741. The cubic root of 421259039 is about 749.6348082829.

The spelling of 421259039 in words is "four hundred twenty-one million, two hundred fifty-nine thousand, thirty-nine".