1145642 has 4 divisors (see below), whose sum is σ = 1718466. Its totient is φ = 572820.

The previous prime is 1145623. The next prime is 1145659. The reversal of 1145642 is 2465411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1002001 + 143641 = 1001^2 + 379^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 286409 + ... + 286412.

2^1145642 is an apocalyptic number.

1145642 is a deficient number, since it is larger than the sum of its proper divisors (572824).

1145642 is an equidigital number, since it uses as much as digits as its factorization.

1145642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572823.

The product of its digits is 960, while the sum is 23.

The square root of 1145642 is about 1070.3466728121. The cubic root of 1145642 is about 104.6364448606.

The spelling of 1145642 in words is "one million, one hundred forty-five thousand, six hundred forty-two".