42705244 has 6 divisors (see below), whose sum is σ = 74734184. Its totient is φ = 21352620.

The previous prime is 42705211. The next prime is 42705251. The reversal of 42705244 is 44250724.

It is a happy number.

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, 5338152 + ... + 5338159.

Almost surely, 2^42705244 is an apocalyptic number.

It is an amenable number.

42705244 is a deficient number, since it is larger than the sum of its proper divisors (32028940).

42705244 is a wasteful number, since it uses less digits than its factorization.

42705244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10676315 (or 10676313 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 42705244 is about 6534.9249421856. The cubic root of 42705244 is about 349.5374679354.

Adding to 42705244 its reverse (44250724), we get a palindrome (86955968).

The spelling of 42705244 in words is "forty-two million, seven hundred five thousand, two hundred forty-four".