2129572 has 12 divisors (see below), whose sum is σ = 3827740. Its totient is φ = 1035936.

The previous prime is 2129551. The next prime is 2129579. The reversal of 2129572 is 2759212.

It can be written as a sum of positive squares in 2 ways, for example, as 1308736 + 820836 = 1144^2 + 906^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2129572.

It is not an unprimeable number, because it can be changed into a prime (2129579) 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, 7047 + ... + 7342.

2^2129572 is an apocalyptic number.

It is an amenable number.

2129572 is a deficient number, since it is larger than the sum of its proper divisors (1698168).

2129572 is a wasteful number, since it uses less digits than its factorization.

2129572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14430 (or 14428 counting only the distinct ones).

The product of its digits is 2520, while the sum is 28.

The square root of 2129572 is about 1459.3053141821. The cubic root of 2129572 is about 128.6562166187.

It can be divided in two parts, 2129 and 572, that added together give a triangular number (2701 = T₇₃).

The spelling of 2129572 in words is "two million, one hundred twenty-nine thousand, five hundred seventy-two".