1243145120 has 48 divisors (see below), whose sum is σ = 3356494848. Its totient is φ = 426220800.

The previous prime is 1243145119. The next prime is 1243145131. The reversal of 1243145120 is 215413421.

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, 553856 + ... + 556095.

It is an arithmetic number, because the mean of its divisors is an integer number (69926976).

Almost surely, 2^1243145120 is an apocalyptic number.

1243145120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243145120 is an abundant number, since it is smaller than the sum of its proper divisors (2113349728).

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

1243145120 is a wasteful number, since it uses less digits than its factorization.

1243145120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109973 (or 1109965 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1243145120 is about 35258.2631449707. The cubic root of 1243145120 is about 1075.2446156875.

Adding to 1243145120 its reverse (215413421), we get a palindrome (1458558541).

The spelling of 1243145120 in words is "one billion, two hundred forty-three million, one hundred forty-five thousand, one hundred twenty".