1101425100 has 72 divisors (see below), whose sum is σ = 3193493520. Its totient is φ = 293095680.

The previous prime is 1101425093. The next prime is 1101425123. The reversal of 1101425100 is 15241011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1101425100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149094 + ... + 156306.

Almost surely, 2^1101425100 is an apocalyptic number.

1101425100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1101425100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1596746760).

1101425100 is an abundant number, since it is smaller than the sum of its proper divisors (2092068420).

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

1101425100 is a wasteful number, since it uses less digits than its factorization.

1101425100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7739 (or 7732 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 1101425100 is about 33187.7251404793. The cubic root of 1101425100 is about 1032.7257116855.

Adding to 1101425100 its reverse (15241011), we get a palindrome (1116666111).

The spelling of 1101425100 in words is "one billion, one hundred one million, four hundred twenty-five thousand, one hundred".