42107747 has 4 divisors (see below), whose sum is σ = 45935736. Its totient is φ = 38279760.

The previous prime is 42107731. The next prime is 42107749. The reversal of 42107747 is 74770124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42107747 - 2⁴ = 42107731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42107749) 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, 1913978 + ... + 1913999.

It is an arithmetic number, because the mean of its divisors is an integer number (11483934).

Almost surely, 2^42107747 is an apocalyptic number.

42107747 is a deficient number, since it is larger than the sum of its proper divisors (3827989).

42107747 is a wasteful number, since it uses less digits than its factorization.

42107747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3827988.

The product of its (nonzero) digits is 10976, while the sum is 32.

The square root of 42107747 is about 6489.0482352961. The cubic root of 42107747 is about 347.8996578408.

It can be divided in two parts, 421077 and 47, that added together give a palindrome (421124).

The spelling of 42107747 in words is "forty-two million, one hundred seven thousand, seven hundred forty-seven".