1103142121 has 8 divisors (see below), whose sum is σ = 1170896040. Its totient is φ = 1035706368.

The previous prime is 1103142119. The next prime is 1103142133. The reversal of 1103142121 is 1212413011.

It can be written as a sum of positive squares in 4 ways, for example, as 765905625 + 337236496 = 27675^2 + 18364^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1103142121 - 2¹ = 1103142119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1103142095 and 1103142104.

It is not an unprimeable number, because it can be changed into a prime (1103142101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72376 + ... + 86281.

It is an arithmetic number, because the mean of its divisors is an integer number (146362005).

Almost surely, 2^1103142121 is an apocalyptic number.

It is an amenable number.

1103142121 is a deficient number, since it is larger than the sum of its proper divisors (67753919).

1103142121 is a wasteful number, since it uses less digits than its factorization.

1103142121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159083.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1103142121 is about 33213.5833809001. The cubic root of 1103142121 is about 1033.2620747138.

Adding to 1103142121 its reverse (1212413011), we get a palindrome (2315555132).

The spelling of 1103142121 in words is "one billion, one hundred three million, one hundred forty-two thousand, one hundred twenty-one".