42894161 has 4 divisors (see below), whose sum is σ = 44373300. Its totient is φ = 41415024.

The previous prime is 42894113. The next prime is 42894167. The reversal of 42894161 is 16149824.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20757136 + 22137025 = 4556^2 + 4705^2 .

It is a cyclic number.

It is not a de Polignac number, because 42894161 - 2¹⁴ = 42877777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42894167) 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 3 ways as a sum of consecutive naturals, for example, 739526 + ... + 739583.

It is an arithmetic number, because the mean of its divisors is an integer number (11093325).

Almost surely, 2^42894161 is an apocalyptic number.

It is an amenable number.

42894161 is a deficient number, since it is larger than the sum of its proper divisors (1479139).

42894161 is a wasteful number, since it uses less digits than its factorization.

42894161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479138.

The product of its digits is 13824, while the sum is 35.

The square root of 42894161 is about 6549.3634041791. The cubic root of 42894161 is about 350.0521310104.

The spelling of 42894161 in words is "forty-two million, eight hundred ninety-four thousand, one hundred sixty-one".