121653876 has 24 divisors (see below), whose sum is σ = 284163264. Its totient is φ = 40507840.

The previous prime is 121653871. The next prime is 121653899. The reversal of 121653876 is 678356121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121653871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7456 + ... + 17288.

It is an arithmetic number, because the mean of its divisors is an integer number (11840136).

Almost surely, 2^121653876 is an apocalyptic number.

It is an amenable number.

121653876 is an abundant number, since it is smaller than the sum of its proper divisors (162509388).

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

121653876 is a wasteful number, since it uses less digits than its factorization.

121653876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10871 (or 10869 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 121653876 is about 11029.6815910524. The cubic root of 121653876 is about 495.4980885753.

The spelling of 121653876 in words is "one hundred twenty-one million, six hundred fifty-three thousand, eight hundred seventy-six".