33420154 has 4 divisors (see below), whose sum is σ = 50130234. Its totient is φ = 16710076.

The previous prime is 33420109. The next prime is 33420161. The reversal of 33420154 is 45102433.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45102433 = 1877 ⋅24029.

It can be written as a sum of positive squares in only one way, i.e., 22043025 + 11377129 = 4695^2 + 3373^2 .

It is a super-2 number, since 2×33420154² = 2233813386767432, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8355037 + ... + 8355040.

Almost surely, 2^33420154 is an apocalyptic number.

33420154 is a deficient number, since it is larger than the sum of its proper divisors (16710080).

33420154 is a wasteful number, since it uses less digits than its factorization.

33420154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16710079.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 33420154 is about 5781.0166925896. The cubic root of 33420154 is about 322.1089674026.

Adding to 33420154 its reverse (45102433), we get a palindrome (78522587).

The spelling of 33420154 in words is "thirty-three million, four hundred twenty thousand, one hundred fifty-four".