2129458 has 8 divisors (see below), whose sum is σ = 3272220. Its totient is φ = 1038720.

The previous prime is 2129447. The next prime is 2129473. The reversal of 2129458 is 8549212.

It can be written as a sum of positive squares in 2 ways, for example, as 1697809 + 431649 = 1303^2 + 657^2 .

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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12903 + ... + 13066.

2^2129458 is an apocalyptic number.

2129458 is a deficient number, since it is larger than the sum of its proper divisors (1142762).

2129458 is a wasteful number, since it uses less digits than its factorization.

2129458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26012.

The product of its digits is 5760, while the sum is 31.

The square root of 2129458 is about 1459.2662539783. The cubic root of 2129458 is about 128.6539208412.

The spelling of 2129458 in words is "two million, one hundred twenty-nine thousand, four hundred fifty-eight".