16121452 has 6 divisors (see below), whose sum is σ = 28212548. Its totient is φ = 8060724.

The previous prime is 16121449. The next prime is 16121453. The reversal of 16121452 is 25412161.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (16121453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2015178 + ... + 2015185.

Almost surely, 2^16121452 is an apocalyptic number.

It is an amenable number.

16121452 is a deficient number, since it is larger than the sum of its proper divisors (12091096).

16121452 is a wasteful number, since it uses less digits than its factorization.

16121452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4030367 (or 4030365 counting only the distinct ones).

The product of its digits is 480, while the sum is 22.

The square root of 16121452 is about 4015.1527990850. The cubic root of 16121452 is about 252.6201865507.

The spelling of 16121452 in words is "sixteen million, one hundred twenty-one thousand, four hundred fifty-two".