33142399 has 2 divisors, whose sum is σ = 33142400. Its totient is φ = 33142398.

The previous prime is 33142397. The next prime is 33142409. The reversal of 33142399 is 99324133.

It is a weak prime.

It is an emirp because it is prime and its reverse (99324133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33142399 - 2¹ = 33142397 is a prime.

It is a super-2 number, since 2×33142399² = 2196837222950402, which contains 22 as substring.

Together with 33142397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33142397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16571199 + 16571200.

It is an arithmetic number, because the mean of its divisors is an integer number (16571200).

Almost surely, 2^33142399 is an apocalyptic number.

33142399 is a deficient number, since it is larger than the sum of its proper divisors (1).

33142399 is an equidigital number, since it uses as much as digits as its factorization.

33142399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 34.

The square root of 33142399 is about 5756.9435467095. The cubic root of 33142399 is about 321.2141342872.

The spelling of 33142399 in words is "thirty-three million, one hundred forty-two thousand, three hundred ninety-nine".