121907448 has 96 divisors (see below), whose sum is σ = 358503600. Its totient is φ = 37200384.

The previous prime is 121907431. The next prime is 121907449. The reversal of 121907448 is 844709121.

121907448 is a `hidden beast` number, since 121 + 90 + 7 + 448 = 666.

It is a super-2 number, since 2×121907448² = 29722851755745408, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121907449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129636 + ... + 130572.

Almost surely, 2^121907448 is an apocalyptic number.

121907448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121907448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179251800).

121907448 is an abundant number, since it is smaller than the sum of its proper divisors (236596152).

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

121907448 is a wasteful number, since it uses less digits than its factorization.

121907448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101 (or 1094 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 121907448 is about 11041.1705901141. The cubic root of 121907448 is about 495.8421171964.

The spelling of 121907448 in words is "one hundred twenty-one million, nine hundred seven thousand, four hundred forty-eight".