42712784 has 10 divisors (see below), whose sum is σ = 82756050. Its totient is φ = 21356384.

The previous prime is 42712781. The next prime is 42712793. The reversal of 42712784 is 48721724.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 29463184 + 13249600 = 5428^2 + 3640^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42712781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1334759 + ... + 1334790.

It is an arithmetic number, because the mean of its divisors is an integer number (8275605).

Almost surely, 2^42712784 is an apocalyptic number.

It is an amenable number.

42712784 is a deficient number, since it is larger than the sum of its proper divisors (40043266).

42712784 is a wasteful number, since it uses less digits than its factorization.

42712784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669557 (or 2669551 counting only the distinct ones).

The product of its digits is 25088, while the sum is 35.

The square root of 42712784 is about 6535.5018169992. The cubic root of 42712784 is about 349.5580380666.

The spelling of 42712784 in words is "forty-two million, seven hundred twelve thousand, seven hundred eighty-four".