4072345 has 4 divisors (see below), whose sum is σ = 4886820. Its totient is φ = 3257872.

The previous prime is 4072337. The next prime is 4072399. The reversal of 4072345 is 5432704.

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 1798281 + 2274064 = 1341^2 + 1508^2 .

It is a cyclic number.

It is not a de Polignac number, because 4072345 - 2³ = 4072337 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, 407230 + ... + 407239.

It is an arithmetic number, because the mean of its divisors is an integer number (1221705).

Almost surely, 2^4072345 is an apocalyptic number.

It is an amenable number.

4072345 is a deficient number, since it is larger than the sum of its proper divisors (814475).

4072345 is an equidigital number, since it uses as much as digits as its factorization.

4072345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814474.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 4072345 is about 2018.0052031647. The cubic root of 4072345 is about 159.6913973477.

The spelling of 4072345 in words is "four million, seventy-two thousand, three hundred forty-five".