42785133 has 4 divisors (see below), whose sum is σ = 57046848. Its totient is φ = 28523420.

The previous prime is 42785123. The next prime is 42785137. The reversal of 42785133 is 33158724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42785133 - 2⁶ = 42785069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42785094 and 42785103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42785137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7130853 + ... + 7130858.

It is an arithmetic number, because the mean of its divisors is an integer number (14261712).

Almost surely, 2^42785133 is an apocalyptic number.

It is an amenable number.

42785133 is a deficient number, since it is larger than the sum of its proper divisors (14261715).

42785133 is a wasteful number, since it uses less digits than its factorization.

42785133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14261714.

The product of its digits is 20160, while the sum is 33.

The square root of 42785133 is about 6541.0345512006. The cubic root of 42785133 is about 349.7552928953.

The spelling of 42785133 in words is "forty-two million, seven hundred eighty-five thousand, one hundred thirty-three".