121154048 has 40 divisors (see below), whose sum is σ = 247746048. Its totient is φ = 59157504.

The previous prime is 121153999. The next prime is 121154071. The reversal of 121154048 is 840451121.

It is a Cunningham number, because it is equal to 11007²-1.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19265 + ... + 24767.

Almost surely, 2^121154048 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 121154048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123873024).

121154048 is an abundant number, since it is smaller than the sum of its proper divisors (126592000).

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

121154048 is an frugal number, since it uses more digits than its factorization.

121154048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5564 (or 5548 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 121154048 is about 11006.9999545744. Note that the first 4 decimals coincide. The cubic root of 121154048 is about 494.8185547274.

The spelling of 121154048 in words is "one hundred twenty-one million, one hundred fifty-four thousand, forty-eight".