42047123 has 8 divisors (see below), whose sum is σ = 43280640. Its totient is φ = 40831560.

The previous prime is 42047111. The next prime is 42047141. The reversal of 42047123 is 32174024.

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 42047123 - 2⁴ = 42047107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42047183) by changing a digit.

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, 338 + ... + 9176.

It is an arithmetic number, because the mean of its divisors is an integer number (5410080).

Almost surely, 2^42047123 is an apocalyptic number.

42047123 is a deficient number, since it is larger than the sum of its proper divisors (1233517).

42047123 is an equidigital number, since it uses as much as digits as its factorization.

42047123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8977.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 42047123 is about 6484.3752975904. The cubic root of 42047123 is about 347.7326165375.

The spelling of 42047123 in words is "forty-two million, forty-seven thousand, one hundred twenty-three".