121619376 has 60 divisors (see below), whose sum is σ = 343913752. Its totient is φ = 40117248.

The previous prime is 121619371. The next prime is 121619383. The reversal of 121619376 is 673916121.

121619376 is a `hidden beast` number, since 1 + 2 + 1 + 619 + 37 + 6 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 121619376.

It is not an unprimeable number, because it can be changed into a prime (121619371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9615 + ... + 18321.

Almost surely, 2^121619376 is an apocalyptic number.

121619376 is a gapful number since it is divisible by the number (16) 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 121619376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171956876).

121619376 is an abundant number, since it is smaller than the sum of its proper divisors (222294376).

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

121619376 is a wasteful number, since it uses less digits than its factorization.

121619376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8818 (or 8809 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 121619376 is about 11028.1175184163. The cubic root of 121619376 is about 495.4512444718.

The spelling of 121619376 in words is "one hundred twenty-one million, six hundred nineteen thousand, three hundred seventy-six".