42247765 has 8 divisors (see below), whose sum is σ = 57939840. Its totient is φ = 28969872.

The previous prime is 42247739. The next prime is 42247781. The reversal of 42247765 is 56774224.

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

It is a cyclic number.

It is not a de Polignac number, because 42247765 - 2⁹ = 42247253 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 603505 + ... + 603574.

It is an arithmetic number, because the mean of its divisors is an integer number (7242480).

Almost surely, 2^42247765 is an apocalyptic number.

It is an amenable number.

42247765 is a deficient number, since it is larger than the sum of its proper divisors (15692075).

42247765 is a wasteful number, since it uses less digits than its factorization.

42247765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207091.

The product of its digits is 94080, while the sum is 37.

The square root of 42247765 is about 6499.8280746494. The cubic root of 42247765 is about 348.2848468234.

The spelling of 42247765 in words is "forty-two million, two hundred forty-seven thousand, seven hundred sixty-five".