5042945 has 4 divisors (see below), whose sum is σ = 6051540. Its totient is φ = 4034352.

The previous prime is 5042929. The next prime is 5042953. The reversal of 5042945 is 5492405.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5492405 = 5 ⋅1098481.

It can be written as a sum of positive squares in 2 ways, for example, as 1236544 + 3806401 = 1112^2 + 1951^2 .

It is a cyclic number.

It is not a de Polignac number, because 5042945 - 2⁴ = 5042929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504290 + ... + 504299.

It is an arithmetic number, because the mean of its divisors is an integer number (1512885).

Almost surely, 2^5042945 is an apocalyptic number.

It is an amenable number.

5042945 is a deficient number, since it is larger than the sum of its proper divisors (1008595).

5042945 is a wasteful number, since it uses less digits than its factorization.

5042945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008594.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 5042945 is about 2245.6502399083. The cubic root of 5042945 is about 171.4857658035.

The spelling of 5042945 in words is "five million, forty-two thousand, nine hundred forty-five".