33742147 has 4 divisors (see below), whose sum is σ = 33776280. Its totient is φ = 33708016.

The previous prime is 33742123. The next prime is 33742207. The reversal of 33742147 is 74124733.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 33742147 - 2¹¹ = 33740099 is a prime.

It is a super-2 number, since 2×33742147² = 2277064968339218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33742117) 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 3 ways as a sum of consecutive naturals, for example, 15538 + ... + 17575.

It is an arithmetic number, because the mean of its divisors is an integer number (8444070).

Almost surely, 2^33742147 is an apocalyptic number.

33742147 is a deficient number, since it is larger than the sum of its proper divisors (34133).

33742147 is a wasteful number, since it uses less digits than its factorization.

33742147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34132.

The product of its digits is 14112, while the sum is 31.

The square root of 33742147 is about 5808.7991013634. The cubic root of 33742147 is about 323.1401367077.

The spelling of 33742147 in words is "thirty-three million, seven hundred forty-two thousand, one hundred forty-seven".