1421350069 has 2 divisors, whose sum is σ = 1421350070. Its totient is φ = 1421350068.

The previous prime is 1421350033. The next prime is 1421350097. The reversal of 1421350069 is 9600531241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 969575044 + 451775025 = 31138^2 + 21255^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421350069 - 2⁹ = 1421349557 is a prime.

It is a super-2 number, since 2×1421350069² = 4040472037292609522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1421350069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421350009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710675034 + 710675035.

It is an arithmetic number, because the mean of its divisors is an integer number (710675035).

Almost surely, 2^1421350069 is an apocalyptic number.

It is an amenable number.

1421350069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421350069 is an equidigital number, since it uses as much as digits as its factorization.

1421350069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 1421350069 is about 37700.7966626701. The cubic root of 1421350069 is about 1124.3469642774.

The spelling of 1421350069 in words is "one billion, four hundred twenty-one million, three hundred fifty thousand, sixty-nine".