42088749 has 8 divisors (see below), whose sum is σ = 56261280. Its totient is φ = 27987696.

The previous prime is 42088733. The next prime is 42088757. The reversal of 42088749 is 94788024.

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

It is not a de Polignac number, because 42088749 - 2⁴ = 42088733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42088749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42088759) 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, 16479 + ... + 18860.

It is an arithmetic number, because the mean of its divisors is an integer number (7032660).

Almost surely, 2^42088749 is an apocalyptic number.

It is an amenable number.

42088749 is a deficient number, since it is larger than the sum of its proper divisors (14172531).

42088749 is a wasteful number, since it uses less digits than its factorization.

42088749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35739.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 42088749 is about 6487.5842191065. The cubic root of 42088749 is about 347.8473286581.

The spelling of 42088749 in words is "forty-two million, eighty-eight thousand, seven hundred forty-nine".