42750042 has 16 divisors (see below), whose sum is σ = 85604160. Its totient is φ = 14232672.

The previous prime is 42750017. The next prime is 42750049. The reversal of 42750042 is 24005724.

It is a junction number, because it is equal to n+sod(n) for n = 42749994 and 42750021.

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 7 ways as a sum of consecutive naturals, for example, 1638 + ... + 9390.

It is an arithmetic number, because the mean of its divisors is an integer number (5350260).

Almost surely, 2^42750042 is an apocalyptic number.

42750042 is an abundant number, since it is smaller than the sum of its proper divisors (42854118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42750042 is a wasteful number, since it uses less digits than its factorization.

42750042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8677.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 42750042 is about 6538.3516271305. The cubic root of 42750042 is about 349.6596473674.

Adding to 42750042 its reverse (24005724), we get a palindrome (66755766).

The spelling of 42750042 in words is "forty-two million, seven hundred fifty thousand, forty-two".