1142740 has 24 divisors (see below), whose sum is σ = 2541672. Its totient is φ = 430080.

The previous prime is 1142737. The next prime is 1142759. The reversal of 1142740 is 472411.

It can be written as a sum of positive squares in 4 ways, for example, as 364816 + 777924 = 604^2 + 882^2 .

It is a congruent number.

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, 1341 + ... + 2020.

It is an arithmetic number, because the mean of its divisors is an integer number (105903).

2^1142740 is an apocalyptic number.

1142740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142740 is an abundant number, since it is smaller than the sum of its proper divisors (1398932).

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

1142740 is a wasteful number, since it uses less digits than its factorization.

1142740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3387 (or 3385 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 1142740 is about 1068.9901776911. The cubic root of 1142740 is about 104.5480194135.

The spelling of 1142740 in words is "one million, one hundred forty-two thousand, seven hundred forty".