2103729 has 16 divisors (see below), whose sum is σ = 2908224. Its totient is φ = 1352000.

The previous prime is 2103719. The next prime is 2103743. The reversal of 2103729 is 9273012.

It is a cyclic number.

It is not a de Polignac number, because 2103729 - 2⁴ = 2103713 is a prime.

2103729 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2103699 and 2103708.

It is not an unprimeable number, because it can be changed into a prime (2103719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15994 + ... + 16124.

It is an arithmetic number, because the mean of its divisors is an integer number (181764).

2^2103729 is an apocalyptic number.

It is an amenable number.

2103729 is a deficient number, since it is larger than the sum of its proper divisors (804495).

2103729 is a wasteful number, since it uses less digits than its factorization.

2103729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288.

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

The square root of 2103729 is about 1450.4237311903. The cubic root of 2103729 is about 128.1336697683.

The spelling of 2103729 in words is "two million, one hundred three thousand, seven hundred twenty-nine".