121855748 has 36 divisors (see below), whose sum is σ = 258858432. Its totient is φ = 49951440.

The previous prime is 121855739. The next prime is 121855757. The reversal of 121855748 is 847558121.

It is an interprime number because it is at equal distance from previous prime (121855739) and next prime (121855757).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9008 + ... + 18023.

It is an arithmetic number, because the mean of its divisors is an integer number (7190512).

Almost surely, 2^121855748 is an apocalyptic number.

It is an amenable number.

121855748 is an abundant number, since it is smaller than the sum of its proper divisors (137002684).

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

121855748 is a wasteful number, since it uses less digits than its factorization.

121855748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27072 (or 27063 counting only the distinct ones).

The product of its digits is 89600, while the sum is 41.

The square root of 121855748 is about 11038.8291045745. The cubic root of 121855748 is about 495.7720130242.

The spelling of 121855748 in words is "one hundred twenty-one million, eight hundred fifty-five thousand, seven hundred forty-eight".