121238416 has 40 divisors (see below), whose sum is σ = 255469760. Its totient is φ = 55403136.

The previous prime is 121238399. The next prime is 121238431. The reversal of 121238416 is 614832121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18595 + ... + 24253.

It is an arithmetic number, because the mean of its divisors is an integer number (6386744).

Almost surely, 2^121238416 is an apocalyptic number.

121238416 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 121238416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127734880).

121238416 is an abundant number, since it is smaller than the sum of its proper divisors (134231344).

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

121238416 is a wasteful number, since it uses less digits than its factorization.

121238416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5783 (or 5777 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 121238416 is about 11010.8317578646. The cubic root of 121238416 is about 494.9333869481.

The spelling of 121238416 in words is "one hundred twenty-one million, two hundred thirty-eight thousand, four hundred sixteen".