1155440141 has 8 divisors (see below), whose sum is σ = 1225005600. Its totient is φ = 1086750000.

The previous prime is 1155440123. The next prime is 1155440159. The reversal of 1155440141 is 1410445511.

It is an interprime number because it is at equal distance from previous prime (1155440123) and next prime (1155440159).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1155440141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1155440141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155440161) 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, 216110 + ... + 221391.

It is an arithmetic number, because the mean of its divisors is an integer number (153125700).

Almost surely, 2^1155440141 is an apocalyptic number.

It is an amenable number.

1155440141 is a deficient number, since it is larger than the sum of its proper divisors (69565459).

1155440141 is a wasteful number, since it uses less digits than its factorization.

1155440141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437659.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 1155440141 is about 33991.7657823185. The cubic root of 1155440141 is about 1049.3390068076.

Adding to 1155440141 its reverse (1410445511), we get a palindrome (2565885652).

The spelling of 1155440141 in words is "one billion, one hundred fifty-five million, four hundred forty thousand, one hundred forty-one".