121389048 has 48 divisors (see below), whose sum is σ = 358651800. Its totient is φ = 36784320.

The previous prime is 121389031. The next prime is 121389053. The reversal of 121389048 is 840983121.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75843 + ... + 77426.

Almost surely, 2^121389048 is an apocalyptic number.

121389048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

121389048 is an abundant number, since it is smaller than the sum of its proper divisors (237262752).

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

121389048 is a wasteful number, since it uses less digits than its factorization.

121389048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153292 (or 153285 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 121389048 is about 11017.6698080856. The cubic root of 121389048 is about 495.1382778669.

The spelling of 121389048 in words is "one hundred twenty-one million, three hundred eighty-nine thousand, forty-eight".