2126144421 has 12 divisors (see below), whose sum is σ = 3146002860. Its totient is φ = 1382857920.

The previous prime is 2126144413. The next prime is 2126144429. The reversal of 2126144421 is 1244416212.

2126144421 is a `hidden beast` number, since 2 + 1 + 2 + 614 + 4 + 42 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (2126144413) and next prime (2126144429).

It can be written as a sum of positive squares in 2 ways, for example, as 104652900 + 2021491521 = 10230^2 + 44961^2 .

It is not a de Polignac number, because 2126144421 - 2³ = 2126144413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126144429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2880586 + ... + 2881323.

It is an arithmetic number, because the mean of its divisors is an integer number (262166905).

Almost surely, 2^2126144421 is an apocalyptic number.

It is an amenable number.

2126144421 is a deficient number, since it is larger than the sum of its proper divisors (1019858439).

2126144421 is a wasteful number, since it uses less digits than its factorization.

2126144421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5761956 (or 5761953 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 2126144421 is about 46110.1336042306. The cubic root of 2126144421 is about 1285.8715483138.

The spelling of 2126144421 in words is "two billion, one hundred twenty-six million, one hundred forty-four thousand, four hundred twenty-one".