33149542 has 4 divisors (see below), whose sum is σ = 49724316. Its totient is φ = 16574770.

The previous prime is 33149531. The next prime is 33149549. The reversal of 33149542 is 24594133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24594133 = 2477 ⋅9929.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33149549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8287384 + ... + 8287387.

It is an arithmetic number, because the mean of its divisors is an integer number (12431079).

Almost surely, 2^33149542 is an apocalyptic number.

33149542 is a deficient number, since it is larger than the sum of its proper divisors (16574774).

33149542 is a wasteful number, since it uses less digits than its factorization.

33149542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16574773.

The product of its digits is 12960, while the sum is 31.

The square root of 33149542 is about 5757.5638945651. The cubic root of 33149542 is about 321.2372091381.

The spelling of 33149542 in words is "thirty-three million, one hundred forty-nine thousand, five hundred forty-two".