42751239 has 8 divisors (see below), whose sum is σ = 57642480. Its totient is φ = 28180416.

The previous prime is 42751213. The next prime is 42751253. The reversal of 42751239 is 93215724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42751239 - 2⁵ = 42751207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42751259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79792 + ... + 80325.

It is an arithmetic number, because the mean of its divisors is an integer number (7205310).

Almost surely, 2^42751239 is an apocalyptic number.

42751239 is a deficient number, since it is larger than the sum of its proper divisors (14891241).

42751239 is a wasteful number, since it uses less digits than its factorization.

42751239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160209.

The product of its digits is 15120, while the sum is 33.

The square root of 42751239 is about 6538.4431633226. The cubic root of 42751239 is about 349.6629108238.

The spelling of 42751239 in words is "forty-two million, seven hundred fifty-one thousand, two hundred thirty-nine".