2140819 has 4 divisors (see below), whose sum is σ = 2166696. Its totient is φ = 2114944.

The previous prime is 2140811. The next prime is 2140823. The reversal of 2140819 is 9180412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2140819 - 2³ = 2140811 is a prime.

It is a super-2 number, since 2×2140819² = 9166211981522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2140793 and 2140802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12814 + ... + 12979.

It is an arithmetic number, because the mean of its divisors is an integer number (541674).

2^2140819 is an apocalyptic number.

2140819 is a deficient number, since it is larger than the sum of its proper divisors (25877).

2140819 is an equidigital number, since it uses as much as digits as its factorization.

2140819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25876.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 2140819 is about 1463.1537854921. The cubic root of 2140819 is about 128.8823115891.

The spelling of 2140819 in words is "two million, one hundred forty thousand, eight hundred nineteen".