42286109 has 4 divisors (see below), whose sum is σ = 42881760. Its totient is φ = 41690460.

The previous prime is 42286099. The next prime is 42286117. The reversal of 42286109 is 90168224.

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 a de Polignac number, because none of the positive numbers 2^k-42286109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42286159) 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, 297719 + ... + 297860.

It is an arithmetic number, because the mean of its divisors is an integer number (10720440).

Almost surely, 2^42286109 is an apocalyptic number.

It is an amenable number.

42286109 is a deficient number, since it is larger than the sum of its proper divisors (595651).

42286109 is an equidigital number, since it uses as much as digits as its factorization.

42286109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595650.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 42286109 is about 6502.7770221652. Note that the first 3 decimals coincide. The cubic root of 42286109 is about 348.3901825415.

The spelling of 42286109 in words is "forty-two million, two hundred eighty-six thousand, one hundred nine".