16042499 has 4 divisors (see below), whose sum is σ = 17500920. Its totient is φ = 14584080.

The previous prime is 16042471. The next prime is 16042501. The reversal of 16042499 is 99424061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99424061 = 11 ⋅9038551.

It is a cyclic number.

It is not a de Polignac number, because 16042499 - 2¹⁶ = 15976963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16042399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729194 + ... + 729215.

It is an arithmetic number, because the mean of its divisors is an integer number (4375230).

Almost surely, 2^16042499 is an apocalyptic number.

16042499 is a deficient number, since it is larger than the sum of its proper divisors (1458421).

16042499 is a wasteful number, since it uses less digits than its factorization.

16042499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458420.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 16042499 is about 4005.3088520113. The cubic root of 16042499 is about 252.2071185026.

The spelling of 16042499 in words is "sixteen million, forty-two thousand, four hundred ninety-nine".