8742140 has 48 divisors (see below), whose sum is σ = 20321280. Its totient is φ = 3132480.

The previous prime is 8742133. The next prime is 8742157. The reversal of 8742140 is 412478.

8742140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17129 + ... + 17631.

It is an arithmetic number, because the mean of its divisors is an integer number (423360).

Almost surely, 2^8742140 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 8742140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10160640).

8742140 is an abundant number, since it is smaller than the sum of its proper divisors (11579140).

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

8742140 is a wasteful number, since it uses less digits than its factorization.

8742140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602 (or 600 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 8742140 is about 2956.7110105656. The cubic root of 8742140 is about 206.0025449775.

The spelling of 8742140 in words is "eight million, seven hundred forty-two thousand, one hundred forty".