2099145 has 8 divisors (see below), whose sum is σ = 3358656. Its totient is φ = 1119536.

The previous prime is 2099129. The next prime is 2099147. The reversal of 2099145 is 5419902.

It is a happy number.

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 2099145 - 2⁴ = 2099129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2099147) 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, 69957 + ... + 69986.

It is an arithmetic number, because the mean of its divisors is an integer number (419832).

2^2099145 is an apocalyptic number.

It is an amenable number.

2099145 is a deficient number, since it is larger than the sum of its proper divisors (1259511).

2099145 is a wasteful number, since it uses less digits than its factorization.

2099145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139951.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 2099145 is about 1448.8426415591. The cubic root of 2099145 is about 128.0405348509.

The spelling of 2099145 in words is "two million, ninety-nine thousand, one hundred forty-five".