42784894 has 8 divisors (see below), whose sum is σ = 65742768. Its totient is φ = 20870640.

The previous prime is 42784891. The next prime is 42784897. The reversal of 42784894 is 49848724.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42784891) and next prime (42784897).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42784891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260802 + ... + 260965.

It is an arithmetic number, because the mean of its divisors is an integer number (8217846).

Almost surely, 2^42784894 is an apocalyptic number.

42784894 is a deficient number, since it is larger than the sum of its proper divisors (22957874).

42784894 is a wasteful number, since it uses less digits than its factorization.

42784894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521810.

The product of its digits is 516096, while the sum is 46.

The square root of 42784894 is about 6541.0162818938. The cubic root of 42784894 is about 349.7546416436.

The spelling of 42784894 in words is "forty-two million, seven hundred eighty-four thousand, eight hundred ninety-four".