42750044 has 12 divisors (see below), whose sum is σ = 76637568. Its totient is φ = 20853600.

The previous prime is 42750017. The next prime is 42750049. The reversal of 42750044 is 44005724.

It is a junction number, because it is equal to n+sod(n) for n = 42749995 and 42750022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42750049) 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, 130172 + ... + 130499.

It is an arithmetic number, because the mean of its divisors is an integer number (6386464).

Almost surely, 2^42750044 is an apocalyptic number.

It is an amenable number.

42750044 is a deficient number, since it is larger than the sum of its proper divisors (33887524).

42750044 is a wasteful number, since it uses less digits than its factorization.

42750044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260716 (or 260714 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 42750044 is about 6538.3517800742. The cubic root of 42750044 is about 349.6596528202.

Adding to 42750044 its reverse (44005724), we get a palindrome (86755768).

The spelling of 42750044 in words is "forty-two million, seven hundred fifty thousand, forty-four".