4202945 has 4 divisors (see below), whose sum is σ = 5043540. Its totient is φ = 3362352.

The previous prime is 4202929. The next prime is 4202959. The reversal of 4202945 is 5492024.

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 3139984 + 1062961 = 1772^2 + 1031^2 .

It is a cyclic number.

It is not a de Polignac number, because 4202945 - 2⁴ = 4202929 is a prime.

It is a congruent number.

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, 420290 + ... + 420299.

It is an arithmetic number, because the mean of its divisors is an integer number (1260885).

Almost surely, 2^4202945 is an apocalyptic number.

It is an amenable number.

4202945 is a deficient number, since it is larger than the sum of its proper divisors (840595).

4202945 is an equidigital number, since it uses as much as digits as its factorization.

4202945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840594.

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

The square root of 4202945 is about 2050.1085337123. The cubic root of 4202945 is about 161.3805664851.

Adding to 4202945 its reverse (5492024), we get a palindrome (9694969).

The spelling of 4202945 in words is "four million, two hundred two thousand, nine hundred forty-five".