981142 has 4 divisors (see below), whose sum is σ = 1471716. Its totient is φ = 490570.

The previous prime is 981139. The next prime is 981151. The reversal of 981142 is 241189.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241189 = 13 ⋅18553.

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, 245284 + ... + 245287.

It is an arithmetic number, because the mean of its divisors is an integer number (367929).

2⁹⁸¹¹⁴² is an apocalyptic number.

981142 is a deficient number, since it is larger than the sum of its proper divisors (490574).

981142 is a wasteful number, since it uses less digits than its factorization.

981142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490573.

The product of its digits is 576, while the sum is 25.

The square root of 981142 is about 990.5261228256. The cubic root of 981142 is about 99.3674066954.

The spelling of 981142 in words is "nine hundred eighty-one thousand, one hundred forty-two".