16442157 has 8 divisors (see below), whose sum is σ = 21982240. Its totient is φ = 10931760.

The previous prime is 16442149. The next prime is 16442161. The reversal of 16442157 is 75124461.

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

It is not a de Polignac number, because 16442157 - 2³ = 16442149 is a prime.

It is a super-3 number, since 3×16442157³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16442147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6094 + ... + 8367.

It is an arithmetic number, because the mean of its divisors is an integer number (2747780).

Almost surely, 2^16442157 is an apocalyptic number.

It is an amenable number.

16442157 is a deficient number, since it is larger than the sum of its proper divisors (5540083).

16442157 is a wasteful number, since it uses less digits than its factorization.

16442157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14843.

The product of its digits is 6720, while the sum is 30.

The square root of 16442157 is about 4054.8929702275. The cubic root of 16442157 is about 254.2843293370.

The spelling of 16442157 in words is "sixteen million, four hundred forty-two thousand, one hundred fifty-seven".