1142547120 has 560 divisors, whose sum is σ = 4713260832. Its totient is φ = 253808640.

The previous prime is 1142547073. The next prime is 1142547143. The reversal of 1142547120 is 217452411.

1142547120 is a `hidden beast` number, since 114 + 2 + 547 + 1 + 2 + 0 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 8339692 + ... + 8339828.

Almost surely, 2^1142547120 is an apocalyptic number.

1142547120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1142547120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2356630416).

1142547120 is an abundant number, since it is smaller than the sum of its proper divisors (3570713712).

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

1142547120 is a wasteful number, since it uses less digits than its factorization.

1142547120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 1142547120 is about 33801.5845782413. The cubic root of 1142547120 is about 1045.4213695653.

Adding to 1142547120 its reverse (217452411), we get a palindrome (1359999531).

The spelling of 1142547120 in words is "one billion, one hundred forty-two million, five hundred forty-seven thousand, one hundred twenty".