121242523 has 2 divisors, whose sum is σ = 121242524. Its totient is φ = 121242522.

The previous prime is 121242503. The next prime is 121242547. The reversal of 121242523 is 325242121.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (325242121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121242523 - 2⁵ = 121242491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121242494 and 121242503.

It is not a weakly prime, because it can be changed into another prime (121242503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60621261 + 60621262.

It is an arithmetic number, because the mean of its divisors is an integer number (60621262).

Almost surely, 2^121242523 is an apocalyptic number.

121242523 is a deficient number, since it is larger than the sum of its proper divisors (1).

121242523 is an equidigital number, since it uses as much as digits as its factorization.

121242523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 22.

The square root of 121242523 is about 11011.0182544577. The cubic root of 121242523 is about 494.9389755741.

Adding to 121242523 its reverse (325242121), we get a palindrome (446484644).

The spelling of 121242523 in words is "one hundred twenty-one million, two hundred forty-two thousand, five hundred twenty-three".