1101142144 has 16 divisors (see below), whose sum is σ = 2193681870. Its totient is φ = 550571008.

The previous prime is 1101142129. The next prime is 1101142177. The reversal of 1101142144 is 4412411011.

It can be written as a sum of positive squares in only one way, i.e., 621006400 + 480135744 = 24920^2 + 21912^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4301209 + ... + 4301464.

Almost surely, 2^1101142144 is an apocalyptic number.

It is an amenable number.

1101142144 is a deficient number, since it is larger than the sum of its proper divisors (1092539726).

1101142144 is an frugal number, since it uses more digits than its factorization.

1101142144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8602687 (or 8602675 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 1101142144 is about 33183.4619049912. The cubic root of 1101142144 is about 1032.6372684001.

Adding to 1101142144 its reverse (4412411011), we get a palindrome (5513553155).

The spelling of 1101142144 in words is "one billion, one hundred one million, one hundred forty-two thousand, one hundred forty-four".