1162542120 has 32 divisors (see below), whose sum is σ = 3487626720. Its totient is φ = 310011200.

The previous prime is 1162542103. The next prime is 1162542163. The reversal of 1162542120 is 212452611.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 4843806 + ... + 4844045.

It is an arithmetic number, because the mean of its divisors is an integer number (108988335).

Almost surely, 2^1162542120 is an apocalyptic number.

1162542120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1162542120 is an abundant number, since it is smaller than the sum of its proper divisors (2325084600).

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

1162542120 is a wasteful number, since it uses less digits than its factorization.

1162542120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9687865 (or 9687861 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1162542120 is about 34096.0719145182. The cubic root of 1162542120 is about 1051.4845576439.

Adding to 1162542120 its reverse (212452611), we get a palindrome (1374994731).

The spelling of 1162542120 in words is "one billion, one hundred sixty-two million, five hundred forty-two thousand, one hundred twenty".