33142423 has 2 divisors, whose sum is σ = 33142424. Its totient is φ = 33142422.

The previous prime is 33142409. The next prime is 33142477. The reversal of 33142423 is 32424133.

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-33142423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33142394 and 33142403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33142493) 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, 16571211 + 16571212.

It is an arithmetic number, because the mean of its divisors is an integer number (16571212).

Almost surely, 2^33142423 is an apocalyptic number.

33142423 is a deficient number, since it is larger than the sum of its proper divisors (1).

33142423 is an equidigital number, since it uses as much as digits as its factorization.

33142423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 22.

The square root of 33142423 is about 5756.9456311485. The cubic root of 33142423 is about 321.2142118227.

Adding to 33142423 its reverse (32424133), we get a palindrome (65566556).

The spelling of 33142423 in words is "thirty-three million, one hundred forty-two thousand, four hundred twenty-three".