1155142485 has 32 divisors (see below), whose sum is σ = 2346958080. Its totient is φ = 528064704.

The previous prime is 1155142459. The next prime is 1155142493. The reversal of 1155142485 is 5842415511.

1155142485 is a `hidden beast` number, since 1 + 1 + 551 + 4 + 24 + 85 = 666.

It is not a de Polignac number, because 1155142485 - 2⁹ = 1155141973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 610242 + ... + 612131.

It is an arithmetic number, because the mean of its divisors is an integer number (73342440).

Almost surely, 2^1155142485 is an apocalyptic number.

1155142485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1155142485 is an abundant number, since it is smaller than the sum of its proper divisors (1191815595).

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

1155142485 is a wasteful number, since it uses less digits than its factorization.

1155142485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222394 (or 1222388 counting only the distinct ones).

The product of its digits is 32000, while the sum is 36.

The square root of 1155142485 is about 33987.3871458222. The cubic root of 1155142485 is about 1049.2488914004.

Adding to 1155142485 its reverse (5842415511), we get a palindrome (6997557996).

The spelling of 1155142485 in words is "one billion, one hundred fifty-five million, one hundred forty-two thousand, four hundred eighty-five".