74121700 has 72 divisors (see below), whose sum is σ = 173426400. Its totient is φ = 27394560.

The previous prime is 74121673. The next prime is 74121701. The reversal of 74121700 is 712147.

It is not an unprimeable number, because it can be changed into a prime (74121701) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 99931 + ... + 100669.

It is an arithmetic number, because the mean of its divisors is an integer number (2408700).

Almost surely, 2^74121700 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 74121700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86713200).

74121700 is an abundant number, since it is smaller than the sum of its proper divisors (99304700).

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

74121700 is a wasteful number, since it uses less digits than its factorization.

74121700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 74121700 is about 8609.3960299199. The cubic root of 74121700 is about 420.0636713750.

Adding to 74121700 its reverse (712147), we get a palindrome (74833847).

The spelling of 74121700 in words is "seventy-four million, one hundred twenty-one thousand, seven hundred".