1422428251 has 2 divisors, whose sum is σ = 1422428252. Its totient is φ = 1422428250.

The previous prime is 1422428243. The next prime is 1422428297. The reversal of 1422428251 is 1528242241.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1422428251 - 2³ = 1422428243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1422426251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711214125 + 711214126.

It is an arithmetic number, because the mean of its divisors is an integer number (711214126).

Almost surely, 2^1422428251 is an apocalyptic number.

1422428251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1422428251 is an equidigital number, since it uses as much as digits as its factorization.

1422428251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10240, while the sum is 31.

The square root of 1422428251 is about 37715.0931458481. The cubic root of 1422428251 is about 1124.6311880099.

The spelling of 1422428251 in words is "one billion, four hundred twenty-two million, four hundred twenty-eight thousand, two hundred fifty-one".