20406119 has 2 divisors, whose sum is σ = 20406120. Its totient is φ = 20406118.

The previous prime is 20406109. The next prime is 20406143. The reversal of 20406119 is 91160402.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20406119 is a prime.

It is a super-2 number, since 2×20406119² = 832819385284322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20406094 and 20406103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20406109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10203059 + 10203060.

It is an arithmetic number, because the mean of its divisors is an integer number (10203060).

Almost surely, 2^20406119 is an apocalyptic number.

20406119 is a deficient number, since it is larger than the sum of its proper divisors (1).

20406119 is an equidigital number, since it uses as much as digits as its factorization.

20406119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 20406119 is about 4517.3132501521. The cubic root of 20406119 is about 273.2667583579.

The spelling of 20406119 in words is "twenty million, four hundred six thousand, one hundred nineteen".