1142741 has 4 divisors (see below), whose sum is σ = 1145184. Its totient is φ = 1140300.

The previous prime is 1142737. The next prime is 1142759. The reversal of 1142741 is 1472411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1142741 - 2² = 1142737 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275 + ... + 1536.

It is an arithmetic number, because the mean of its divisors is an integer number (286296).

2^1142741 is an apocalyptic number.

It is an amenable number.

1142741 is a deficient number, since it is larger than the sum of its proper divisors (2443).

1142741 is an equidigital number, since it uses as much as digits as its factorization.

1142741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442.

The product of its digits is 224, while the sum is 20.

The square root of 1142741 is about 1068.9906454221. The cubic root of 1142741 is about 104.5480499098.

Adding to 1142741 its sum of digits (20), we get a square (1142761 = 1069²).

The spelling of 1142741 in words is "one million, one hundred forty-two thousand, seven hundred forty-one".