1098125 has 20 divisors (see below), whose sum is σ = 1574496. Its totient is φ = 750000.

The previous prime is 1098121. The next prime is 1098133. The reversal of 1098125 is 5218901.

It is a happy number.

It is not a de Polignac number, because 1098125 - 2² = 1098121 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1098094 and 1098103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098121) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4250 + ... + 4500.

2^1098125 is an apocalyptic number.

It is an amenable number.

1098125 is a deficient number, since it is larger than the sum of its proper divisors (476371).

1098125 is an frugal number, since it uses more digits than its factorization.

1098125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 1098125 is about 1047.9145957567. The cubic root of 1098125 is about 103.1693259096.

The spelling of 1098125 in words is "one million, ninety-eight thousand, one hundred twenty-five".