2129434 has 8 divisors (see below), whose sum is σ = 3254580. Its totient is φ = 1044576.

The previous prime is 2129431. The next prime is 2129443. The reversal of 2129434 is 4349212.

It can be written as a sum of positive squares in 2 ways, for example, as 2111209 + 18225 = 1453^2 + 135^2 .

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

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2129399 and 2129408.

It is not an unprimeable number, because it can be changed into a prime (2129431) 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, 9939 + ... + 10150.

2^2129434 is an apocalyptic number.

2129434 is a deficient number, since it is larger than the sum of its proper divisors (1125146).

2129434 is a wasteful number, since it uses less digits than its factorization.

2129434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20144.

The product of its digits is 1728, while the sum is 25.

The square root of 2129434 is about 1459.2580306443. The cubic root of 2129434 is about 128.6534375092.

The spelling of 2129434 in words is "two million, one hundred twenty-nine thousand, four hundred thirty-four".