1101200142 has 64 divisors (see below), whose sum is σ = 2608349184. Its totient is φ = 303367680.

The previous prime is 1101200123. The next prime is 1101200147. The reversal of 1101200142 is 2410021011.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101200147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172467 + ... + 178737.

It is an arithmetic number, because the mean of its divisors is an integer number (40755456).

Almost surely, 2^1101200142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1101200142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1304174592).

1101200142 is an abundant number, since it is smaller than the sum of its proper divisors (1507149042).

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

1101200142 is a wasteful number, since it uses less digits than its factorization.

1101200142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6433.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1101200142 is about 33184.3357926598. The cubic root of 1101200142 is about 1032.6553980137.

Adding to 1101200142 its reverse (2410021011), we get a palindrome (3511221153).

The spelling of 1101200142 in words is "one billion, one hundred one million, two hundred thousand, one hundred forty-two".