1101042120 has 32 divisors (see below), whose sum is σ = 3303126720. Its totient is φ = 293611200.

The previous prime is 1101042113. The next prime is 1101042127. The reversal of 1101042120 is 212401011.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1101042113) and next prime (1101042127).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1101042096 and 1101042105.

It is not an unprimeable number, because it can be changed into a prime (1101042127) 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, 4587556 + ... + 4587795.

It is an arithmetic number, because the mean of its divisors is an integer number (103222710).

Almost surely, 2^1101042120 is an apocalyptic number.

1101042120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101042120 is an abundant number, since it is smaller than the sum of its proper divisors (2202084600).

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

1101042120 is a wasteful number, since it uses less digits than its factorization.

1101042120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9175365 (or 9175361 counting only the distinct ones).

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

The square root of 1101042120 is about 33181.9547344637. The cubic root of 1101042120 is about 1032.6060003698.

Adding to 1101042120 its reverse (212401011), we get a palindrome (1313443131).

The spelling of 1101042120 in words is "one billion, one hundred one million, forty-two thousand, one hundred twenty".