20042015 has 8 divisors (see below), whose sum is σ = 27486240. Its totient is φ = 13743072.

The previous prime is 20041981. The next prime is 20042041. The reversal of 20042015 is 51024002.

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

It is a de Polignac number, because none of the positive numbers 2^k-20042015 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286280 + ... + 286349.

It is an arithmetic number, because the mean of its divisors is an integer number (3435780).

Almost surely, 2^20042015 is an apocalyptic number.

20042015 is a deficient number, since it is larger than the sum of its proper divisors (7444225).

20042015 is an equidigital number, since it uses as much as digits as its factorization.

20042015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572641.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 20042015 is about 4476.8309103651. The cubic root of 20042015 is about 271.6317058067.

Adding to 20042015 its reverse (51024002), we get a palindrome (71066017).

The spelling of 20042015 in words is "twenty million, forty-two thousand, fifteen".