20042019 has 16 divisors (see below), whose sum is σ = 29959200. Its totient is φ = 13241088.

The previous prime is 20041981. The next prime is 20042041. The reversal of 20042019 is 91024002.

It is not a de Polignac number, because 20042019 - 2⁷ = 20041891 is a prime.

It is a super-2 number, since 2×20042019² = 803365051192722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20041992 and 20042010.

It is not an unprimeable number, because it can be changed into a prime (20042059) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 234 + ... + 6335.

It is an arithmetic number, because the mean of its divisors is an integer number (1872450).

Almost surely, 2^20042019 is an apocalyptic number.

20042019 is a deficient number, since it is larger than the sum of its proper divisors (9917181).

20042019 is a wasteful number, since it uses less digits than its factorization.

20042019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6691 (or 6685 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 20042019 is about 4476.8313571096. The cubic root of 20042019 is about 271.6317238775.

The spelling of 20042019 in words is "twenty million, forty-two thousand, nineteen".