1098642 has 16 divisors (see below), whose sum is σ = 2326752. Its totient is φ = 344640.

The previous prime is 1098631. The next prime is 1098649. The reversal of 1098642 is 2468901.

It is not an unprimeable number, because it can be changed into a prime (1098649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5284 + ... + 5487.

It is an arithmetic number, because the mean of its divisors is an integer number (145422).

2^1098642 is an apocalyptic number.

1098642 is an abundant number, since it is smaller than the sum of its proper divisors (1228110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1098642 is a wasteful number, since it uses less digits than its factorization.

1098642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10793.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1098642 is about 1048.1612471371. The cubic root of 1098642 is about 103.1855141617.

The spelling of 1098642 in words is "one million, ninety-eight thousand, six hundred forty-two".