42272739 has 24 divisors (see below), whose sum is σ = 66111120. Its totient is φ = 26692416.

The previous prime is 42272729. The next prime is 42272743. The reversal of 42272739 is 93727224.

It is not a de Polignac number, because 42272739 - 2¹⁵ = 42239971 is a prime.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (42272719) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7579 + ... + 11915.

It is an arithmetic number, because the mean of its divisors is an integer number (2754630).

Almost surely, 2^42272739 is an apocalyptic number.

42272739 is a deficient number, since it is larger than the sum of its proper divisors (23838381).

42272739 is a wasteful number, since it uses less digits than its factorization.

42272739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4384 (or 4359 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 42272739 is about 6501.7489185603. The cubic root of 42272739 is about 348.3534607286.

The spelling of 42272739 in words is "forty-two million, two hundred seventy-two thousand, seven hundred thirty-nine".