2102739 has 8 divisors (see below), whose sum is σ = 2826240. Its totient is φ = 1390536.

The previous prime is 2102717. The next prime is 2102741. The reversal of 2102739 is 9372012.

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

It is not a de Polignac number, because 2102739 - 2¹¹ = 2100691 is a prime.

It is a super-2 number, since 2×2102739² = 8843022604242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2102759) 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, 2379 + ... + 3140.

It is an arithmetic number, because the mean of its divisors is an integer number (353280).

2^2102739 is an apocalyptic number.

2102739 is a deficient number, since it is larger than the sum of its proper divisors (723501).

2102739 is a wasteful number, since it uses less digits than its factorization.

2102739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5649.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 2102739 is about 1450.0824114512. The cubic root of 2102739 is about 128.1135670147.

The spelling of 2102739 in words is "two million, one hundred two thousand, seven hundred thirty-nine".