2126139 has 16 divisors (see below), whose sum is σ = 3068928. Its totient is φ = 1304192.

The previous prime is 2126129. The next prime is 2126141. The reversal of 2126139 is 9316212.

It is a cyclic number.

It is not a de Polignac number, because 2126139 - 2²⁰ = 1077563 is a prime.

2126139 is a lucky number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (2126129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1954 + ... + 2840.

It is an arithmetic number, because the mean of its divisors is an integer number (191808).

2^2126139 is an apocalyptic number.

2126139 is a deficient number, since it is larger than the sum of its proper divisors (942789).

2126139 is a wasteful number, since it uses less digits than its factorization.

2126139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954.

The product of its digits is 648, while the sum is 24.

The square root of 2126139 is about 1458.1285951520. The cubic root of 2126139 is about 128.5870455457.

The spelling of 2126139 in words is "two million, one hundred twenty-six thousand, one hundred thirty-nine".