121719744 has 42 divisors (see below), whose sum is σ = 348889320. Its totient is φ = 40573056.

The previous prime is 121719737. The next prime is 121719769. The reversal of 121719744 is 447917121.

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

It is a junction number, because it is equal to n+sod(n) for n = 121719699 and 121719708.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 105084 + ... + 106235.

Almost surely, 2^121719744 is an apocalyptic number.

It is an amenable number.

121719744 is an abundant number, since it is smaller than the sum of its proper divisors (227169576).

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

121719744 is a wasteful number, since it uses less digits than its factorization.

121719744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211337 (or 211324 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 121719744 is about 11032.6671299373. The cubic root of 121719744 is about 495.5874995626.

The spelling of 121719744 in words is "one hundred twenty-one million, seven hundred nineteen thousand, seven hundred forty-four".