2129004 has 30 divisors (see below), whose sum is σ = 5566484. Its totient is φ = 709560.

The previous prime is 2129003. The next prime is 2129011. The reversal of 2129004 is 4009212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (2129003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2962 + ... + 3609.

2^2129004 is an apocalyptic number.

It is an amenable number.

2129004 is an abundant number, since it is smaller than the sum of its proper divisors (3437480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2129004 is a wasteful number, since it uses less digits than its factorization.

2129004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6587 (or 6576 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2129004 is about 1459.1106880563. The cubic root of 2129004 is about 128.6447771951.

It can be divided in two parts, 212 and 9004, that added together give a square (9216 = 96²).

The spelling of 2129004 in words is "two million, one hundred twenty-nine thousand, four".