1101142755 has 40 divisors (see below), whose sum is σ = 2027276592. Its totient is φ = 571396032.

The previous prime is 1101142747. The next prime is 1101142759. The reversal of 1101142755 is 5572411011.

It is not a de Polignac number, because 1101142755 - 2³ = 1101142747 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1101142759) 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 39 ways as a sum of consecutive naturals, for example, 21757 + ... + 51726.

Almost surely, 2^1101142755 is an apocalyptic number.

1101142755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1101142755 is a deficient number, since it is larger than the sum of its proper divisors (926133837).

1101142755 is an equidigital number, since it uses as much as digits as its factorization.

1101142755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73537 (or 73528 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

The square root of 1101142755 is about 33183.4711113831. The cubic root of 1101142755 is about 1032.6374593961.

Adding to 1101142755 its reverse (5572411011), we get a palindrome (6673553766).

The spelling of 1101142755 in words is "one billion, one hundred one million, one hundred forty-two thousand, seven hundred fifty-five".