2042945 has 8 divisors (see below), whose sum is σ = 2471040. Its totient is φ = 1621360.

The previous prime is 2042933. The next prime is 2042969. The reversal of 2042945 is 5492402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2042945 - 2¹² = 2038849 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 905 + ... + 2214.

It is an arithmetic number, because the mean of its divisors is an integer number (308880).

2^2042945 is an apocalyptic number.

It is an amenable number.

2042945 is a deficient number, since it is larger than the sum of its proper divisors (428095).

2042945 is a wasteful number, since it uses less digits than its factorization.

2042945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3255.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2042945 is about 1429.3162701096. The cubic root of 2042945 is about 126.8875148421.

The spelling of 2042945 in words is "two million, forty-two thousand, nine hundred forty-five".