2129499 has 24 divisors (see below), whose sum is σ = 3276000. Its totient is φ = 1330560.

The previous prime is 2129497. The next prime is 2129507. The reversal of 2129499 is 9949212.

It is not a de Polignac number, because 2129499 - 2¹ = 2129497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2129497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10602 + ... + 10800.

It is an arithmetic number, because the mean of its divisors is an integer number (136500).

2^2129499 is an apocalyptic number.

2129499 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2129499 is a deficient number, since it is larger than the sum of its proper divisors (1146501).

2129499 is a wasteful number, since it uses less digits than its factorization.

2129499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 272 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 2129499 is about 1459.2803020667. The cubic root of 2129499 is about 128.6547465250.

It can be divided in two parts, 2129 and 499, that added together give a triangular number (2628 = T₇₂).

The spelling of 2129499 in words is "two million, one hundred twenty-nine thousand, four hundred ninety-nine".