142749033 has 16 divisors (see below), whose sum is σ = 228971520. Its totient is φ = 77277456.

The previous prime is 142749031. The next prime is 142749037. The reversal of 142749033 is 330947241.

It is not a de Polignac number, because 142749033 - 2¹ = 142749031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142748985 and 142749003.

It is not an unprimeable number, because it can be changed into a prime (142749031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178485 + ... + 179282.

It is an arithmetic number, because the mean of its divisors is an integer number (14310720).

Almost surely, 2^142749033 is an apocalyptic number.

It is an amenable number.

142749033 is a deficient number, since it is larger than the sum of its proper divisors (86222487).

142749033 is a wasteful number, since it uses less digits than its factorization.

142749033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357796.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 142749033 is about 11947.7626775895. The cubic root of 142749033 is about 522.6260562901.

The spelling of 142749033 in words is "one hundred forty-two million, seven hundred forty-nine thousand, thirty-three".