2042745 has 32 divisors (see below), whose sum is σ = 3538944. Its totient is φ = 1003200.

The previous prime is 2042717. The next prime is 2042749. The reversal of 2042745 is 5472402.

It is not a de Polignac number, because 2042745 - 2⁶ = 2042681 is a prime.

2042745 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2042749) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10600 + ... + 10790.

It is an arithmetic number, because the mean of its divisors is an integer number (110592).

2^2042745 is an apocalyptic number.

It is an amenable number.

2042745 is a deficient number, since it is larger than the sum of its proper divisors (1496199).

2042745 is a wasteful number, since it uses less digits than its factorization.

2042745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 2042745 is about 1429.2463048754. The cubic root of 2042745 is about 126.8833740337.

The spelling of 2042745 in words is "two million, forty-two thousand, seven hundred forty-five".