42838784 has 18 divisors (see below), whose sum is σ = 85510740. Its totient is φ = 21419264.

The previous prime is 42838769. The next prime is 42838813. The reversal of 42838784 is 48783824.

It is a super-2 number, since 2×42838784² = 3670322829197312, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83414 + ... + 83925.

Almost surely, 2^42838784 is an apocalyptic number.

It is an amenable number.

42838784 is a deficient number, since it is larger than the sum of its proper divisors (42671956).

42838784 is an equidigital number, since it uses as much as digits as its factorization.

42838784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167355 (or 167341 counting only the distinct ones).

The product of its digits is 344064, while the sum is 44.

The square root of 42838784 is about 6545.1343760079. The cubic root of 42838784 is about 349.9014253011.

The spelling of 42838784 in words is "forty-two million, eight hundred thirty-eight thousand, seven hundred eighty-four".