1098142 has 4 divisors (see below), whose sum is σ = 1647216. Its totient is φ = 549070.

The previous prime is 1098133. The next prime is 1098151. The reversal of 1098142 is 2418901.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (1098133) and next prime (1098151).

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, 274534 + ... + 274537.

It is an arithmetic number, because the mean of its divisors is an integer number (411804).

2^1098142 is an apocalyptic number.

1098142 is a deficient number, since it is larger than the sum of its proper divisors (549074).

1098142 is an equidigital number, since it uses as much as digits as its factorization.

1098142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549073.

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

The square root of 1098142 is about 1047.9227070734. The cubic root of 1098142 is about 103.1698582927.

The spelling of 1098142 in words is "one million, ninety-eight thousand, one hundred forty-two".