421003039 has 2 divisors, whose sum is σ = 421003040. Its totient is φ = 421003038.

The previous prime is 421003027. The next prime is 421003069. The reversal of 421003039 is 930300124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421003039 - 2¹¹ = 421000991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421003069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210501519 + 210501520.

It is an arithmetic number, because the mean of its divisors is an integer number (210501520).

Almost surely, 2^421003039 is an apocalyptic number.

421003039 is a deficient number, since it is larger than the sum of its proper divisors (1).

421003039 is an equidigital number, since it uses as much as digits as its factorization.

421003039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 421003039 is about 20518.3585844482. The cubic root of 421003039 is about 749.4829259649.

The spelling of 421003039 in words is "four hundred twenty-one million, three thousand, thirty-nine".