42894079 has 4 divisors (see below), whose sum is σ = 43336384. Its totient is φ = 42451776.

The previous prime is 42894073. The next prime is 42894109. The reversal of 42894079 is 97049824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42894079 - 2⁷ = 42893951 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 (42894073) 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, 221007 + ... + 221200.

It is an arithmetic number, because the mean of its divisors is an integer number (10834096).

Almost surely, 2^42894079 is an apocalyptic number.

42894079 is a deficient number, since it is larger than the sum of its proper divisors (442305).

42894079 is an equidigital number, since it uses as much as digits as its factorization.

42894079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442304.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 42894079 is about 6549.3571440257. The cubic root of 42894079 is about 350.0519079475.

The spelling of 42894079 in words is "forty-two million, eight hundred ninety-four thousand, seventy-nine".