1115542101 has 8 divisors (see below), whose sum is σ = 1538678880. Its totient is φ = 718050032.

The previous prime is 1115542097. The next prime is 1115542111. The reversal of 1115542101 is 1012455111.

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

It is a cyclic number.

It is not a de Polignac number, because 1115542101 - 2² = 1115542097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115542111) 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, 6411075 + ... + 6411248.

It is an arithmetic number, because the mean of its divisors is an integer number (192334860).

Almost surely, 2^1115542101 is an apocalyptic number.

It is an amenable number.

1115542101 is a deficient number, since it is larger than the sum of its proper divisors (423136779).

1115542101 is a wasteful number, since it uses less digits than its factorization.

1115542101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12822355.

The product of its (nonzero) digits is 200, while the sum is 21.

The square root of 1115542101 is about 33399.7320498234. The cubic root of 1115542101 is about 1037.1191540855.

Adding to 1115542101 its reverse (1012455111), we get a palindrome (2127997212).

The spelling of 1115542101 in words is "one billion, one hundred fifteen million, five hundred forty-two thousand, one hundred one".