42879184 has 10 divisors (see below), whose sum is σ = 83078450. Its totient is φ = 21439584.

The previous prime is 42879167. The next prime is 42879191. The reversal of 42879184 is 48197824.

It can be written as a sum of positive squares in only one way, i.e., 42771600 + 107584 = 6540^2 + 328^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42879184.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1339959 + ... + 1339990.

It is an arithmetic number, because the mean of its divisors is an integer number (8307845).

Almost surely, 2^42879184 is an apocalyptic number.

It is an amenable number.

42879184 is a deficient number, since it is larger than the sum of its proper divisors (40199266).

42879184 is a wasteful number, since it uses less digits than its factorization.

42879184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2679957 (or 2679951 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 42879184 is about 6548.2199107849. The cubic root of 42879184 is about 350.0113846637.

The spelling of 42879184 in words is "forty-two million, eight hundred seventy-nine thousand, one hundred eighty-four".