1142380 has 12 divisors (see below), whose sum is σ = 2399040. Its totient is φ = 456944.

The previous prime is 1142363. The next prime is 1142389. The reversal of 1142380 is 832411.

It is not an unprimeable number, because it can be changed into a prime (1142389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28540 + ... + 28579.

It is an arithmetic number, because the mean of its divisors is an integer number (199920).

2^1142380 is an apocalyptic number.

1142380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142380 is an abundant number, since it is smaller than the sum of its proper divisors (1256660).

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

1142380 is a wasteful number, since it uses less digits than its factorization.

1142380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57128 (or 57126 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1142380 is about 1068.8217812152. The cubic root of 1142380 is about 104.5370395931.

Adding to 1142380 its reverse (832411), we get a palindrome (1974791).

The spelling of 1142380 in words is "one million, one hundred forty-two thousand, three hundred eighty".