2145719 has 8 divisors (see below), whose sum is σ = 2199360. Its totient is φ = 2092896.

The previous prime is 2145713. The next prime is 2145721. The reversal of 2145719 is 9175412.

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 2145719 - 2²⁰ = 1097143 is a prime.

It is a super-2 number, since 2×2145719² = 9208220053922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2145691 and 2145700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12317 + ... + 12489.

It is an arithmetic number, because the mean of its divisors is an integer number (274920).

2^2145719 is an apocalyptic number.

2145719 is a deficient number, since it is larger than the sum of its proper divisors (53641).

2145719 is a wasteful number, since it uses less digits than its factorization.

2145719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409.

The product of its digits is 2520, while the sum is 29.

The square root of 2145719 is about 1464.8272935742. The cubic root of 2145719 is about 128.9805671507.

The spelling of 2145719 in words is "two million, one hundred forty-five thousand, seven hundred nineteen".