426502121 has 2 divisors, whose sum is σ = 426502122. Its totient is φ = 426502120.

The previous prime is 426502099. The next prime is 426502129. The reversal of 426502121 is 121205624.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 425803225 + 698896 = 20635^2 + 836^2 .

It is a cyclic number.

It is not a de Polignac number, because 426502121 - 2¹⁴ = 426485737 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (426502129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213251060 + 213251061.

It is an arithmetic number, because the mean of its divisors is an integer number (213251061).

Almost surely, 2^426502121 is an apocalyptic number.

It is an amenable number.

426502121 is a deficient number, since it is larger than the sum of its proper divisors (1).

426502121 is an equidigital number, since it uses as much as digits as its factorization.

426502121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 426502121 is about 20651.9277792655. The cubic root of 426502121 is about 752.7320335359.

Adding to 426502121 its reverse (121205624), we get a palindrome (547707745).

The spelling of 426502121 in words is "four hundred twenty-six million, five hundred two thousand, one hundred twenty-one".