121847142 has 16 divisors (see below), whose sum is σ = 250281072. Its totient is φ = 39517920.

The previous prime is 121847093. The next prime is 121847149. The reversal of 121847142 is 241748121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121847149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274209 + ... + 274652.

It is an arithmetic number, because the mean of its divisors is an integer number (15642567).

Almost surely, 2^121847142 is an apocalyptic number.

121847142 is an abundant number, since it is smaller than the sum of its proper divisors (128433930).

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

121847142 is a wasteful number, since it uses less digits than its factorization.

121847142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548903.

The product of its digits is 3584, while the sum is 30.

The square root of 121847142 is about 11038.4392918564. The cubic root of 121847142 is about 495.7603415343.

The spelling of 121847142 in words is "one hundred twenty-one million, eight hundred forty-seven thousand, one hundred forty-two".