1101724420 has 24 divisors (see below), whose sum is σ = 2316447000. Its totient is φ = 440151552.

The previous prime is 1101724391. The next prime is 1101724427. The reversal of 1101724420 is 244271011.

It can be written as a sum of positive squares in 4 ways, for example, as 429981696 + 671742724 = 20736^2 + 25918^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1101724391 and 1101724400.

It is not an unprimeable number, because it can be changed into a prime (1101724427) 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, 16645 + ... + 49804.

It is an arithmetic number, because the mean of its divisors is an integer number (96518625).

Almost surely, 2^1101724420 is an apocalyptic number.

1101724420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101724420 is an abundant number, since it is smaller than the sum of its proper divisors (1214722580).

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

1101724420 is a wasteful number, since it uses less digits than its factorization.

1101724420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67287 (or 67285 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1101724420 is about 33192.2343327472. The cubic root of 1101724420 is about 1032.8192533655.

Adding to 1101724420 its reverse (244271011), we get a palindrome (1345995431).

The spelling of 1101724420 in words is "one billion, one hundred one million, seven hundred twenty-four thousand, four hundred twenty".