42380444 has 12 divisors (see below), whose sum is σ = 77390544. Its totient is φ = 20268864.

The previous prime is 42380411. The next prime is 42380447. The reversal of 42380444 is 44408324.

It is a super-2 number, since 2×42380444² = 3592204067274272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42380447) 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, 230237 + ... + 230420.

It is an arithmetic number, because the mean of its divisors is an integer number (6449212).

Almost surely, 2^42380444 is an apocalyptic number.

It is an amenable number.

42380444 is a deficient number, since it is larger than the sum of its proper divisors (35010100).

42380444 is a wasteful number, since it uses less digits than its factorization.

42380444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460684 (or 460682 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

The square root of 42380444 is about 6510.0264208373. The cubic root of 42380444 is about 348.6490617130.

Adding to 42380444 its reverse (44408324), we get a palindrome (86788768).

It can be divided in two parts, 42380 and 444, that added together give a palindrome (42824).

The spelling of 42380444 in words is "forty-two million, three hundred eighty thousand, four hundred forty-four".