1145534120 has 32 divisors (see below), whose sum is σ = 2729068200. Its totient is φ = 431259648.

The previous prime is 1145534119. The next prime is 1145534161. The reversal of 1145534120 is 214355411.

It can be written as a sum of positive squares in 4 ways, for example, as 1098392164 + 47141956 = 33142^2 + 6866^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1145534120.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841625 + ... + 842984.

Almost surely, 2^1145534120 is an apocalyptic number.

1145534120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145534120 is an abundant number, since it is smaller than the sum of its proper divisors (1583534080).

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

1145534120 is a wasteful number, since it uses less digits than its factorization.

1145534120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684637 (or 1684633 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1145534120 is about 33845.7400569112. The cubic root of 1145534120 is about 1046.3316037501.

Adding to 1145534120 its reverse (214355411), we get a palindrome (1359889531).

The spelling of 1145534120 in words is "one billion, one hundred forty-five million, five hundred thirty-four thousand, one hundred twenty".