33143040142 has 4 divisors (see below), whose sum is σ = 49714560216. Its totient is φ = 16571520070.

The previous prime is 33143040121. The next prime is 33143040143. The reversal of 33143040142 is 24104034133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24104034133 = 71257 ⋅338269.

It is a super-2 number, since 2×33143040142² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33143040143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8285760034 + ... + 8285760037.

It is an arithmetic number, because the mean of its divisors is an integer number (12428640054).

Almost surely, 2^33143040142 is an apocalyptic number.

33143040142 is a deficient number, since it is larger than the sum of its proper divisors (16571520074).

33143040142 is a wasteful number, since it uses less digits than its factorization.

33143040142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16571520073.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 33143040142 its reverse (24104034133), we get a palindrome (57247074275).

The spelling of 33143040142 in words is "thirty-three billion, one hundred forty-three million, forty thousand, one hundred forty-two".