121239463 has 4 divisors (see below), whose sum is σ = 126510768. Its totient is φ = 115968160.

The previous prime is 121239451. The next prime is 121239467. The reversal of 121239463 is 364932121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 364932121 = 1277 ⋅285773.

It is a cyclic number.

It is not a de Polignac number, because 121239463 - 2⁵ = 121239431 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121239467) 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 in 3 ways as a sum of consecutive naturals, for example, 2635618 + ... + 2635663.

It is an arithmetic number, because the mean of its divisors is an integer number (31627692).

Almost surely, 2^121239463 is an apocalyptic number.

121239463 is a deficient number, since it is larger than the sum of its proper divisors (5271305).

121239463 is an equidigital number, since it uses as much as digits as its factorization.

121239463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5271304.

The product of its digits is 7776, while the sum is 31.

The square root of 121239463 is about 11010.8793018541. The cubic root of 121239463 is about 494.9348116719.

The spelling of 121239463 in words is "one hundred twenty-one million, two hundred thirty-nine thousand, four hundred sixty-three".