1422412421 has 2 divisors, whose sum is σ = 1422412422. Its totient is φ = 1422412420.

The previous prime is 1422412289. The next prime is 1422412477. The reversal of 1422412421 is 1242142241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1275275521 + 147136900 = 35711^2 + 12130^2 .

It is an emirp because it is prime and its reverse (1242142241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1422412421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1422418421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711206210 + 711206211.

It is an arithmetic number, because the mean of its divisors is an integer number (711206211).

Almost surely, 2^1422412421 is an apocalyptic number.

It is an amenable number.

1422412421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1422412421 is an equidigital number, since it uses as much as digits as its factorization.

1422412421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1024, while the sum is 23.

The square root of 1422412421 is about 37714.8832823330. The cubic root of 1422412421 is about 1124.6270160413.

Adding to 1422412421 its reverse (1242142241), we get a palindrome (2664554662).

The spelling of 1422412421 in words is "one billion, four hundred twenty-two million, four hundred twelve thousand, four hundred twenty-one".