4001245 has 8 divisors (see below), whose sum is σ = 4812984. Its totient is φ = 3193344.

The previous prime is 4001243. The next prime is 4001269. The reversal of 4001245 is 5421004.

It can be written as a sum of positive squares in 4 ways, for example, as 549081 + 3452164 = 741^2 + 1858^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 4001245 - 2¹ = 4001243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2437 + ... + 3733.

It is an arithmetic number, because the mean of its divisors is an integer number (601623).

Almost surely, 2^4001245 is an apocalyptic number.

It is an amenable number.

4001245 is a deficient number, since it is larger than the sum of its proper divisors (811739).

4001245 is a wasteful number, since it uses less digits than its factorization.

4001245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 4001245 is about 2000.3112257846. The cubic root of 4001245 is about 158.7565727743.

Adding to 4001245 its reverse (5421004), we get a palindrome (9422249).

The spelling of 4001245 in words is "four million, one thousand, two hundred forty-five".