121269144 has 64 divisors (see below), whose sum is σ = 312439680. Its totient is φ = 39200000.

The previous prime is 121269139. The next prime is 121269167. The reversal of 121269144 is 441962121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246739 + ... + 247229.

It is an arithmetic number, because the mean of its divisors is an integer number (4881870).

Almost surely, 2^121269144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121269144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156219840).

121269144 is an abundant number, since it is smaller than the sum of its proper divisors (191170536).

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

121269144 is a wasteful number, since it uses less digits than its factorization.

121269144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792 (or 788 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 121269144 is about 11012.2270227234. The cubic root of 121269144 is about 494.9751972064.

The spelling of 121269144 in words is "one hundred twenty-one million, two hundred sixty-nine thousand, one hundred forty-four".