16142069 has 4 divisors (see below), whose sum is σ = 16535820. Its totient is φ = 15748320.

The previous prime is 16142059. The next prime is 16142083. The reversal of 16142069 is 96024161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6061444 + 10080625 = 2462^2 + 3175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16142069 is a prime.

It is a super-2 number, since 2×16142069² = 521132783201522, which contains 22 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 (16142029) 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, 196814 + ... + 196895.

It is an arithmetic number, because the mean of its divisors is an integer number (4133955).

Almost surely, 2^16142069 is an apocalyptic number.

It is an amenable number.

16142069 is a deficient number, since it is larger than the sum of its proper divisors (393751).

16142069 is an equidigital number, since it uses as much as digits as its factorization.

16142069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393750.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 16142069 is about 4017.7193779556. The cubic root of 16142069 is about 252.7278288763.

The spelling of 16142069 in words is "sixteen million, one hundred forty-two thousand, sixty-nine".