2129430 has 16 divisors (see below), whose sum is σ = 5110704. Its totient is φ = 567840.

The previous prime is 2129423. The next prime is 2129431. The reversal of 2129430 is 349212.

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 = 2129397 and 2129406.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 35461 + ... + 35520.

It is an arithmetic number, because the mean of its divisors is an integer number (319419).

2^2129430 is an apocalyptic number.

2129430 is an abundant number, since it is smaller than the sum of its proper divisors (2981274).

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

2129430 is a wasteful number, since it uses less digits than its factorization.

2129430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70991.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 2129430 is about 1459.2566600842. The cubic root of 2129430 is about 128.6533569535.

The spelling of 2129430 in words is "two million, one hundred twenty-nine thousand, four hundred thirty".