42738871 has 4 divisors (see below), whose sum is σ = 48844432. Its totient is φ = 36633312.

The previous prime is 42738827. The next prime is 42738877. The reversal of 42738871 is 17883724.

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 42738871 - 2⁷ = 42738743 is a prime.

It is a super-2 number, since 2×42738871² = 3653222188709282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42738877) 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, 3052770 + ... + 3052783.

It is an arithmetic number, because the mean of its divisors is an integer number (12211108).

Almost surely, 2^42738871 is an apocalyptic number.

42738871 is a deficient number, since it is larger than the sum of its proper divisors (6105561).

42738871 is an equidigital number, since it uses as much as digits as its factorization.

42738871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6105560.

The product of its digits is 75264, while the sum is 40.

The square root of 42738871 is about 6537.4973040147. The cubic root of 42738871 is about 349.6291882301.

The spelling of 42738871 in words is "forty-two million, seven hundred thirty-eight thousand, eight hundred seventy-one".