1142558 has 4 divisors (see below), whose sum is σ = 1713840. Its totient is φ = 571278.

The previous prime is 1142549. The next prime is 1142569. The reversal of 1142558 is 8552411.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285638 + ... + 285641.

It is an arithmetic number, because the mean of its divisors is an integer number (428460).

2^1142558 is an apocalyptic number.

1142558 is a deficient number, since it is larger than the sum of its proper divisors (571282).

1142558 is an equidigital number, since it uses as much as digits as its factorization.

1142558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571281.

The product of its digits is 1600, while the sum is 26.

The square root of 1142558 is about 1068.9050472329. The cubic root of 1142558 is about 104.5424687925.

Adding to 1142558 its reverse (8552411), we get a palindrome (9694969).

The spelling of 1142558 in words is "one million, one hundred forty-two thousand, five hundred fifty-eight".