1147042 has 16 divisors (see below), whose sum is σ = 1871352. Its totient is φ = 524160.

The previous prime is 1147039. The next prime is 1147043. The reversal of 1147042 is 2407411.

It is a Cunningham number, because it is equal to 1071²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 776161 + 370881 = 881^2 + 609^2 .

It is not an unprimeable number, because it can be changed into a prime (1147043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3942 + ... + 4222.

2^1147042 is an apocalyptic number.

1147042 is a deficient number, since it is larger than the sum of its proper divisors (724310).

1147042 is a wasteful number, since it uses less digits than its factorization.

1147042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453.

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

The square root of 1147042 is about 1071.0004668533. Note that the first 3 decimals coincide. The cubic root of 1147042 is about 104.6790501979.

The spelling of 1147042 in words is "one million, one hundred forty-seven thousand, forty-two".