42742179 has 6 divisors (see below), whose sum is σ = 61738716. Its totient is φ = 28494780.

The previous prime is 42742169. The next prime is 42742207. The reversal of 42742179 is 97124724.

It is not a de Polignac number, because 42742179 - 2⁹ = 42741667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42742169) 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 5 ways as a sum of consecutive naturals, for example, 2374557 + ... + 2374574.

It is an arithmetic number, because the mean of its divisors is an integer number (10289786).

Almost surely, 2^42742179 is an apocalyptic number.

42742179 is a deficient number, since it is larger than the sum of its proper divisors (18996537).

42742179 is a wasteful number, since it uses less digits than its factorization.

42742179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4749137 (or 4749134 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 42742179 is about 6537.7503011357. The cubic root of 42742179 is about 349.6382084614.

The spelling of 42742179 in words is "forty-two million, seven hundred forty-two thousand, one hundred seventy-nine".