1100170420 has 12 divisors (see below), whose sum is σ = 2310357924. Its totient is φ = 440068160.

The previous prime is 1100170397. The next prime is 1100170429. The reversal of 1100170420 is 240710011.

It can be written as a sum of positive squares in 2 ways, for example, as 366952336 + 733218084 = 19156^2 + 27078^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1100170394 and 1100170403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100170429) 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, 27504241 + ... + 27504280.

It is an arithmetic number, because the mean of its divisors is an integer number (192529827).

Almost surely, 2^1100170420 is an apocalyptic number.

1100170420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100170420 is an abundant number, since it is smaller than the sum of its proper divisors (1210187504).

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

1100170420 is a wasteful number, since it uses less digits than its factorization.

1100170420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55008530 (or 55008528 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 1100170420 is about 33168.8169822199. The cubic root of 1100170420 is about 1032.3334221512. Note that the first 3 decimals are identical.

Adding to 1100170420 its reverse (240710011), we get a palindrome (1340880431).

The spelling of 1100170420 in words is "one billion, one hundred million, one hundred seventy thousand, four hundred twenty".