1098742 has 8 divisors (see below), whose sum is σ = 1656000. Its totient is φ = 546744.

The previous prime is 1098737. The next prime is 1098787. The reversal of 1098742 is 2478901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 742 + ... + 1657.

It is an arithmetic number, because the mean of its divisors is an integer number (207000).

2^1098742 is an apocalyptic number.

1098742 is a deficient number, since it is larger than the sum of its proper divisors (557258).

1098742 is a wasteful number, since it uses less digits than its factorization.

1098742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1098742 is about 1048.2089486357. The cubic root of 1098742 is about 103.1886447655.

The spelling of 1098742 in words is "one million, ninety-eight thousand, seven hundred forty-two".