1142458 has 4 divisors (see below), whose sum is σ = 1713690. Its totient is φ = 571228.

The previous prime is 1142431. The next prime is 1142473. The reversal of 1142458 is 8542411.

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., 1138489 + 3969 = 1067^2 + 63^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285613 + ... + 285616.

2^1142458 is an apocalyptic number.

1142458 is a deficient number, since it is larger than the sum of its proper divisors (571232).

1142458 is an equidigital number, since it uses as much as digits as its factorization.

1142458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571231.

The product of its digits is 1280, while the sum is 25.

The square root of 1142458 is about 1068.8582693697. The cubic root of 1142458 is about 104.5394187499.

Adding to 1142458 its reverse (8542411), we get a palindrome (9684869).

It can be divided in two parts, 1142 and 458, that added together give a square (1600 = 40²).

The spelling of 1142458 in words is "one million, one hundred forty-two thousand, four hundred fifty-eight".