33942121 has 4 divisors (see below), whose sum is σ = 33996544. Its totient is φ = 33887700.

The previous prime is 33942109. The next prime is 33942127. The reversal of 33942121 is 12124933.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33942121 - 2¹³ = 33933929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33942127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26265 + ... + 27526.

It is an arithmetic number, because the mean of its divisors is an integer number (8499136).

Almost surely, 2^33942121 is an apocalyptic number.

It is an amenable number.

33942121 is a deficient number, since it is larger than the sum of its proper divisors (54423).

33942121 is an equidigital number, since it uses as much as digits as its factorization.

33942121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54422.

The product of its digits is 1296, while the sum is 25.

The square root of 33942121 is about 5825.9866975475. The cubic root of 33942121 is about 323.7772468037. Note that the first 3 decimals are identical.

The spelling of 33942121 in words is "thirty-three million, nine hundred forty-two thousand, one hundred twenty-one".