1421026417 has 2 divisors, whose sum is σ = 1421026418. Its totient is φ = 1421026416.

The previous prime is 1421026381. The next prime is 1421026427. The reversal of 1421026417 is 7146201241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1020866401 + 400160016 = 31951^2 + 20004^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421026417 - 2¹¹ = 1421024369 is a prime.

It is not a weakly prime, because it can be changed into another prime (1421026427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710513208 + 710513209.

It is an arithmetic number, because the mean of its divisors is an integer number (710513209).

Almost surely, 2^1421026417 is an apocalyptic number.

It is an amenable number.

1421026417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421026417 is an equidigital number, since it uses as much as digits as its factorization.

1421026417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 1421026417 is about 37696.5040421522. The cubic root of 1421026417 is about 1124.2616170722.

Adding to 1421026417 its reverse (7146201241), we get a palindrome (8567227658).

The spelling of 1421026417 in words is "one billion, four hundred twenty-one million, twenty-six thousand, four hundred seventeen".