42041644 has 6 divisors (see below), whose sum is σ = 73572884. Its totient is φ = 21020820.

The previous prime is 42041639. The next prime is 42041647. The reversal of 42041644 is 44614024.

It is not an unprimeable number, because it can be changed into a prime (42041647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5255202 + ... + 5255209.

Almost surely, 2^42041644 is an apocalyptic number.

It is an amenable number.

42041644 is a deficient number, since it is larger than the sum of its proper divisors (31531240).

42041644 is a wasteful number, since it uses less digits than its factorization.

42041644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10510415 (or 10510413 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 42041644 is about 6483.9528067376. The cubic root of 42041644 is about 347.7175119784.

Adding to 42041644 its reverse (44614024), we get a palindrome (86655668).

The spelling of 42041644 in words is "forty-two million, forty-one thousand, six hundred forty-four".