121764984 has 64 divisors (see below), whose sum is σ = 336147840. Its totient is φ = 36447360.

The previous prime is 121764953. The next prime is 121764989. The reversal of 121764984 is 489467121.

It is a super-2 number, since 2×121764984² = 29653422657040512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121764989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19134 + ... + 24690.

It is an arithmetic number, because the mean of its divisors is an integer number (5252310).

Almost surely, 2^121764984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121764984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168073920).

121764984 is an abundant number, since it is smaller than the sum of its proper divisors (214382856).

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

121764984 is a wasteful number, since it uses less digits than its factorization.

121764984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5660 (or 5656 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 121764984 is about 11034.7172143195. The cubic root of 121764984 is about 495.6488908664.

The spelling of 121764984 in words is "one hundred twenty-one million, seven hundred sixty-four thousand, nine hundred eighty-four".