16995742 has 4 divisors (see below), whose sum is σ = 25493616. Its totient is φ = 8497870.

The previous prime is 16995739. The next prime is 16995743. The reversal of 16995742 is 24759961.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24759961 = 61 ⋅405901.

It is a super-2 number, since 2×16995742² = 577710492261128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16995743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4248934 + ... + 4248937.

It is an arithmetic number, because the mean of its divisors is an integer number (6373404).

Almost surely, 2^16995742 is an apocalyptic number.

16995742 is a deficient number, since it is larger than the sum of its proper divisors (8497874).

16995742 is an equidigital number, since it uses as much as digits as its factorization.

16995742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8497873.

The product of its digits is 136080, while the sum is 43.

The square root of 16995742 is about 4122.5892349348. The cubic root of 16995742 is about 257.1066895928.

The spelling of 16995742 in words is "sixteen million, nine hundred ninety-five thousand, seven hundred forty-two".