42747140 has 24 divisors (see below), whose sum is σ = 92666112. Its totient is φ = 16547040.

The previous prime is 42747127. The next prime is 42747143. The reversal of 42747140 is 4174724.

It is not an unprimeable number, because it can be changed into a prime (42747143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33854 + ... + 35093.

It is an arithmetic number, because the mean of its divisors is an integer number (3861088).

Almost surely, 2^42747140 is an apocalyptic number.

It is an amenable number.

42747140 is an abundant number, since it is smaller than the sum of its proper divisors (49918972).

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

42747140 is a wasteful number, since it uses less digits than its factorization.

42747140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68987 (or 68985 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 42747140 is about 6538.1297019866. The cubic root of 42747140 is about 349.6517352094.

The spelling of 42747140 in words is "forty-two million, seven hundred forty-seven thousand, one hundred forty".