42005746 has 16 divisors (see below), whose sum is σ = 65367000. Its totient is φ = 20220928.

The previous prime is 42005741. The next prime is 42005749. The reversal of 42005746 is 64750024.

It can be written as a sum of positive squares in 4 ways, for example, as 39200121 + 2805625 = 6261^2 + 1675^2 .

It is not an unprimeable number, because it can be changed into a prime (42005741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25236 + ... + 26848.

Almost surely, 2^42005746 is an apocalyptic number.

42005746 is a deficient number, since it is larger than the sum of its proper divisors (23361254).

42005746 is a wasteful number, since it uses less digits than its factorization.

42005746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2093.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 42005746 is about 6481.1839967710. The cubic root of 42005746 is about 347.6185155508.

The spelling of 42005746 in words is "forty-two million, five thousand, seven hundred forty-six".