426523121 has 2 divisors, whose sum is σ = 426523122. Its totient is φ = 426523120.

The previous prime is 426523117. The next prime is 426523129. The reversal of 426523121 is 121325624.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 406586896 + 19936225 = 20164^2 + 4465^2 .

It is a cyclic number.

It is not a de Polignac number, because 426523121 - 2² = 426523117 is a prime.

It is not a weakly prime, because it can be changed into another prime (426523129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213261560 + 213261561.

It is an arithmetic number, because the mean of its divisors is an integer number (213261561).

Almost surely, 2^426523121 is an apocalyptic number.

It is an amenable number.

426523121 is a deficient number, since it is larger than the sum of its proper divisors (1).

426523121 is an equidigital number, since it uses as much as digits as its factorization.

426523121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 26.

The square root of 426523121 is about 20652.4362001193. The cubic root of 426523121 is about 752.7443876075.

Adding to 426523121 its reverse (121325624), we get a palindrome (547848745).

The spelling of 426523121 in words is "four hundred twenty-six million, five hundred twenty-three thousand, one hundred twenty-one".