121279242 has 64 divisors (see below), whose sum is σ = 293299200. Its totient is φ = 32659200.

The previous prime is 121279237. The next prime is 121279243. The reversal of 121279242 is 242972121.

It is not an unprimeable number, because it can be changed into a prime (121279243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 302242 + ... + 302642.

It is an arithmetic number, because the mean of its divisors is an integer number (4582800).

Almost surely, 2^121279242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121279242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146649600).

121279242 is an abundant number, since it is smaller than the sum of its proper divisors (172019958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121279242 is a wasteful number, since it uses less digits than its factorization.

121279242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811.

The product of its digits is 4032, while the sum is 30.

The square root of 121279242 is about 11012.6855035454. The cubic root of 121279242 is about 494.9889355756.

The spelling of 121279242 in words is "one hundred twenty-one million, two hundred seventy-nine thousand, two hundred forty-two".