421003069 has 2 divisors, whose sum is σ = 421003070. Its totient is φ = 421003068.

The previous prime is 421003039. The next prime is 421003081. The reversal of 421003069 is 960300124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 289442169 + 131560900 = 17013^2 + 11470^2 .

It is a cyclic number.

It is not a de Polignac number, because 421003069 - 2⁷ = 421002941 is a prime.

It is a super-2 number, since 2×421003069² = 354487168214837522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421003039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210501534 + 210501535.

It is an arithmetic number, because the mean of its divisors is an integer number (210501535).

Almost surely, 2^421003069 is an apocalyptic number.

It is an amenable number.

421003069 is a deficient number, since it is larger than the sum of its proper divisors (1).

421003069 is an equidigital number, since it uses as much as digits as its factorization.

421003069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 421003069 is about 20518.3593155008. The cubic root of 421003069 is about 749.4829437672.

The spelling of 421003069 in words is "four hundred twenty-one million, three thousand, sixty-nine".