121154125 has 8 divisors (see below), whose sum is σ = 151200504. Its totient is φ = 96923200.

The previous prime is 121154123. The next prime is 121154129. The reversal of 121154125 is 521451121.

It can be written as a sum of positive squares in 4 ways, for example, as 10778089 + 110376036 = 3283^2 + 10506^2 .

It is not a de Polignac number, because 121154125 - 2¹ = 121154123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121154096 and 121154105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121154123) 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, 484492 + ... + 484741.

It is an arithmetic number, because the mean of its divisors is an integer number (18900063).

Almost surely, 2^121154125 is an apocalyptic number.

It is an amenable number.

121154125 is a deficient number, since it is larger than the sum of its proper divisors (30046379).

121154125 is an frugal number, since it uses more digits than its factorization.

121154125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969248 (or 969238 counting only the distinct ones).

The product of its digits is 400, while the sum is 22.

The square root of 121154125 is about 11007.0034523480. The cubic root of 121154125 is about 494.8186595554.

The spelling of 121154125 in words is "one hundred twenty-one million, one hundred fifty-four thousand, one hundred twenty-five".