42785923 has 8 divisors (see below), whose sum is σ = 45753120. Its totient is φ = 39868800.

The previous prime is 42785909. The next prime is 42785959. The reversal of 42785923 is 32958724.

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 42785923 - 2¹⁷ = 42654851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42785993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10743 + ... + 14176.

It is an arithmetic number, because the mean of its divisors is an integer number (5719140).

Almost surely, 2^42785923 is an apocalyptic number.

42785923 is a deficient number, since it is larger than the sum of its proper divisors (2967197).

42785923 is a wasteful number, since it uses less digits than its factorization.

42785923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25037.

The product of its digits is 120960, while the sum is 40.

The square root of 42785923 is about 6541.0949389227. The cubic root of 42785923 is about 349.7574455510.

It can be divided in two parts, 4278 and 5923, that added together give a palindrome (10201).

The spelling of 42785923 in words is "forty-two million, seven hundred eighty-five thousand, nine hundred twenty-three".