2127723461 has 4 divisors (see below), whose sum is σ = 2128981932. Its totient is φ = 2126464992.

The previous prime is 2127723449. The next prime is 2127723467. The reversal of 2127723461 is 1643277212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1450162561 + 677560900 = 38081^2 + 26030^2 .

It is a cyclic number.

It is not a de Polignac number, because 2127723461 - 2¹⁸ = 2127461317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2127723467) 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, 626696 + ... + 630081.

It is an arithmetic number, because the mean of its divisors is an integer number (532245483).

Almost surely, 2^2127723461 is an apocalyptic number.

It is an amenable number.

2127723461 is a deficient number, since it is larger than the sum of its proper divisors (1258471).

2127723461 is a wasteful number, since it uses less digits than its factorization.

2127723461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258470.

The product of its digits is 28224, while the sum is 35.

The square root of 2127723461 is about 46127.2529097496. The cubic root of 2127723461 is about 1286.1897989059.

The spelling of 2127723461 in words is "two billion, one hundred twenty-seven million, seven hundred twenty-three thousand, four hundred sixty-one".