74421270 has 96 divisors (see below), whose sum is σ = 241263360. Its totient is φ = 15462720.

The previous prime is 74421253. The next prime is 74421299. The reversal of 74421270 is 7212447.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1561 + ... + 12299.

It is an arithmetic number, because the mean of its divisors is an integer number (2513160).

Almost surely, 2^74421270 is an apocalyptic number.

74421270 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 74421270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120631680).

74421270 is an abundant number, since it is smaller than the sum of its proper divisors (166842090).

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

74421270 is a wasteful number, since it uses less digits than its factorization.

74421270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10770 (or 10767 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 74421270 is about 8626.7763388186. The cubic root of 74421270 is about 420.6288199717.

It can be divided in two parts, 74421 and 270, that added together give a triangular number (74691 = T₃₈₆).

The spelling of 74421270 in words is "seventy-four million, four hundred twenty-one thousand, two hundred seventy".