21342119 has 2 divisors, whose sum is σ = 21342120. Its totient is φ = 21342118.

The previous prime is 21342071. The next prime is 21342143. The reversal of 21342119 is 91124312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21342119 - 2⁸ = 21341863 is a prime.

It is a super-2 number, since 2×21342119² = 910972086820322, 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 = 21342094 and 21342103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21342169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10671059 + 10671060.

It is an arithmetic number, because the mean of its divisors is an integer number (10671060).

Almost surely, 2^21342119 is an apocalyptic number.

21342119 is a deficient number, since it is larger than the sum of its proper divisors (1).

21342119 is an equidigital number, since it uses as much as digits as its factorization.

21342119 is an evil number, because the sum of its binary digits is even.

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

The square root of 21342119 is about 4619.7531319325. The cubic root of 21342119 is about 277.3825772714.

The spelling of 21342119 in words is "twenty-one million, three hundred forty-two thousand, one hundred nineteen".