20098042 has 8 divisors (see below), whose sum is σ = 30250836. Its totient is φ = 10014432.

The previous prime is 20098033. The next prime is 20098049. The reversal of 20098042 is 24089002.

It can be written as a sum of positive squares in 2 ways, for example, as 14523721 + 5574321 = 3811^2 + 2361^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20097998 and 20098016.

It is not an unprimeable number, because it can be changed into a prime (20098049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16563 + ... + 17734.

Almost surely, 2^20098042 is an apocalyptic number.

20098042 is a deficient number, since it is larger than the sum of its proper divisors (10152794).

20098042 is a wasteful number, since it uses less digits than its factorization.

20098042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34592.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 20098042 is about 4483.0839831527. The cubic root of 20098042 is about 271.8845837464.

The spelling of 20098042 in words is "twenty million, ninety-eight thousand, forty-two".