42894745 has 4 divisors (see below), whose sum is σ = 51473700. Its totient is φ = 34315792.

The previous prime is 42894743. The next prime is 42894763. The reversal of 42894745 is 54749824.

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 11209104 + 31685641 = 3348^2 + 5629^2 .

It is a cyclic number.

It is not a de Polignac number, because 42894745 - 2¹ = 42894743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42894743) 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, 4289470 + ... + 4289479.

It is an arithmetic number, because the mean of its divisors is an integer number (12868425).

Almost surely, 2^42894745 is an apocalyptic number.

It is an amenable number.

42894745 is a deficient number, since it is larger than the sum of its proper divisors (8578955).

42894745 is an equidigital number, since it uses as much as digits as its factorization.

42894745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8578954.

The product of its digits is 322560, while the sum is 43.

The square root of 42894745 is about 6549.4079885132. The cubic root of 42894745 is about 350.0537196456.

The spelling of 42894745 in words is "forty-two million, eight hundred ninety-four thousand, seven hundred forty-five".