1142500320 has 144 divisors (see below), whose sum is σ = 4198757472. Its totient is φ = 281226240.

The previous prime is 1142500309. The next prime is 1142500339. The reversal of 1142500320 is 230052411.

1142500320 is a `hidden beast` number, since 1 + 142 + 500 + 3 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1142500293 and 1142500302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11796 + ... + 49235.

It is an arithmetic number, because the mean of its divisors is an integer number (29158038).

Almost surely, 2^1142500320 is an apocalyptic number.

1142500320 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 1142500320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2099378736).

1142500320 is an abundant number, since it is smaller than the sum of its proper divisors (3056257152).

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

1142500320 is a wasteful number, since it uses less digits than its factorization.

1142500320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61065 (or 61054 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1142500320 is about 33800.8922959143. The cubic root of 1142500320 is about 1045.4070954967.

Adding to 1142500320 its reverse (230052411), we get a palindrome (1372552731).

The spelling of 1142500320 in words is "one billion, one hundred forty-two million, five hundred thousand, three hundred twenty".