121246243 has 4 divisors (see below), whose sum is σ = 121558320. Its totient is φ = 120934168.

The previous prime is 121246231. The next prime is 121246247. The reversal of 121246243 is 342642121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342642121 = 97 ⋅3532393.

It is a cyclic number.

It is not a de Polignac number, because 121246243 - 2⁹ = 121245731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121246247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155455 + ... + 156232.

It is an arithmetic number, because the mean of its divisors is an integer number (30389580).

Almost surely, 2^121246243 is an apocalyptic number.

121246243 is a deficient number, since it is larger than the sum of its proper divisors (312077).

121246243 is an equidigital number, since it uses as much as digits as its factorization.

121246243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312076.

The product of its digits is 2304, while the sum is 25.

The square root of 121246243 is about 11011.1871748690. The cubic root of 121246243 is about 494.9440374784.

Adding to 121246243 its reverse (342642121), we get a palindrome (463888364).

The spelling of 121246243 in words is "one hundred twenty-one million, two hundred forty-six thousand, two hundred forty-three".