42117783 has 8 divisors (see below), whose sum is σ = 57526896. Its totient is φ = 27393600.

The previous prime is 42117767. The next prime is 42117791. The reversal of 42117783 is 38771124.

It is a happy number.

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

It is not a de Polignac number, because 42117783 - 2⁴ = 42117767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42117703) 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, 171088 + ... + 171333.

It is an arithmetic number, because the mean of its divisors is an integer number (7190862).

Almost surely, 2^42117783 is an apocalyptic number.

42117783 is a deficient number, since it is larger than the sum of its proper divisors (15409113).

42117783 is a wasteful number, since it uses less digits than its factorization.

42117783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342465.

The product of its digits is 9408, while the sum is 33.

The square root of 42117783 is about 6489.8214921522. The cubic root of 42117783 is about 347.9272952223.

The spelling of 42117783 in words is "forty-two million, one hundred seventeen thousand, seven hundred eighty-three".