2127170440 has 32 divisors (see below), whose sum is σ = 4897442880. Its totient is φ = 831079872.

The previous prime is 2127170429. The next prime is 2127170447. The reversal of 2127170440 is 440717212.

It is a junction number, because it is equal to n+sod(n) for n = 2127170399 and 2127170408.

It is not an unprimeable number, because it can be changed into a prime (2127170447) 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, 616644 + ... + 620083.

It is an arithmetic number, because the mean of its divisors is an integer number (153045090).

Almost surely, 2^2127170440 is an apocalyptic number.

2127170440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2127170440 is an abundant number, since it is smaller than the sum of its proper divisors (2770272440).

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

2127170440 is a wasteful number, since it uses less digits than its factorization.

2127170440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236781 (or 1236777 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 2127170440 is about 46121.2580053927. The cubic root of 2127170440 is about 1286.0783571678.

Adding to 2127170440 its reverse (440717212), we get a palindrome (2567887652).

The spelling of 2127170440 in words is "two billion, one hundred twenty-seven million, one hundred seventy thousand, four hundred forty".