42244730 has 24 divisors (see below), whose sum is σ = 83584116. Its totient is φ = 15361280.

The previous prime is 42244717. The next prime is 42244739. The reversal of 42244730 is 3744224.

It can be written as a sum of positive squares in 2 ways, for example, as 41977441 + 267289 = 6479^2 + 517^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42244730.

It is not an unprimeable number, because it can be changed into a prime (42244739) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16247 + ... + 18666.

Almost surely, 2^42244730 is an apocalyptic number.

42244730 is a deficient number, since it is larger than the sum of its proper divisors (41339386).

42244730 is a wasteful number, since it uses less digits than its factorization.

42244730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34942 (or 34931 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 42244730 is about 6499.5946027425. The cubic root of 42244730 is about 348.2765065809.

Adding to 42244730 its reverse (3744224), we get a palindrome (45988954).

The spelling of 42244730 in words is "forty-two million, two hundred forty-four thousand, seven hundred thirty".