121243888 has 20 divisors (see below), whose sum is σ = 240640848. Its totient is φ = 59143040.

The previous prime is 121243877. The next prime is 121243891. The reversal of 121243888 is 888342121.

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, 91756 + ... + 93067.

Almost surely, 2^121243888 is an apocalyptic number.

It is an amenable number.

121243888 is a deficient number, since it is larger than the sum of its proper divisors (119396960).

121243888 is a wasteful number, since it uses less digits than its factorization.

121243888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184872 (or 184866 counting only the distinct ones).

The product of its digits is 24576, while the sum is 37.

The square root of 121243888 is about 11011.0802376515. The cubic root of 121243888 is about 494.9408329784.

The spelling of 121243888 in words is "one hundred twenty-one million, two hundred forty-three thousand, eight hundred eighty-eight".