1142642 has 4 divisors (see below), whose sum is σ = 1713966. Its totient is φ = 571320.

The previous prime is 1142633. The next prime is 1142651. The reversal of 1142642 is 2462411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2462411 = 7 ⋅351773.

It is an interprime number because it is at equal distance from previous prime (1142633) and next prime (1142651).

It can be written as a sum of positive squares in only one way, i.e., 625681 + 516961 = 791^2 + 719^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285659 + ... + 285662.

2^1142642 is an apocalyptic number.

1142642 is a deficient number, since it is larger than the sum of its proper divisors (571324).

1142642 is an equidigital number, since it uses as much as digits as its factorization.

1142642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571323.

The product of its digits is 384, while the sum is 20.

The square root of 1142642 is about 1068.9443390561. The cubic root of 1142642 is about 104.5450306908.

The spelling of 1142642 in words is "one million, one hundred forty-two thousand, six hundred forty-two".