16121442 has 8 divisors (see below), whose sum is σ = 32242896. Its totient is φ = 5373812.

The previous prime is 16121437. The next prime is 16121447. The reversal of 16121442 is 24412161.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16121437) and next prime (16121447).

It is a sphenic number, since it is the product of 3 distinct primes.

16121442 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (16121447) 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, 1343448 + ... + 1343459.

It is an arithmetic number, because the mean of its divisors is an integer number (4030362).

Almost surely, 2^16121442 is an apocalyptic number.

16121442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16121442 is a wasteful number, since it uses less digits than its factorization.

16121442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686912.

The product of its digits is 384, while the sum is 21.

The square root of 16121442 is about 4015.1515538022. The cubic root of 16121442 is about 252.6201343180.

The spelling of 16121442 in words is "sixteen million, one hundred twenty-one thousand, four hundred forty-two".