1145003120 has 40 divisors (see below), whose sum is σ = 2664606240. Its totient is φ = 457575680.

The previous prime is 1145003081. The next prime is 1145003129. The reversal of 1145003120 is 213005411.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1145003120² = 2622064289619468800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145003129) 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, 88421 + ... + 100539.

It is an arithmetic number, because the mean of its divisors is an integer number (66615156).

Almost surely, 2^1145003120 is an apocalyptic number.

1145003120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145003120 is an abundant number, since it is smaller than the sum of its proper divisors (1519603120).

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

1145003120 is a wasteful number, since it uses less digits than its factorization.

1145003120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13313 (or 13307 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1145003120 is about 33837.8947335676. The cubic root of 1145003120 is about 1046.1699068491.

Adding to 1145003120 its reverse (213005411), we get a palindrome (1358008531).

The spelling of 1145003120 in words is "one billion, one hundred forty-five million, three thousand, one hundred twenty".