16258442 has 4 divisors (see below), whose sum is σ = 24387666. Its totient is φ = 8129220.

The previous prime is 16258423. The next prime is 16258519. The reversal of 16258442 is 24485261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24485261 = 47 ⋅520963.

It can be written as a sum of positive squares in only one way, i.e., 14891881 + 1366561 = 3859^2 + 1169^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16258399 and 16258408.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4064609 + ... + 4064612.

Almost surely, 2^16258442 is an apocalyptic number.

16258442 is a deficient number, since it is larger than the sum of its proper divisors (8129224).

16258442 is an equidigital number, since it uses as much as digits as its factorization.

16258442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8129223.

The product of its digits is 15360, while the sum is 32.

The square root of 16258442 is about 4032.1758394197. The cubic root of 16258442 is about 253.3337053703. Note that the first 3 decimals are identical.

The spelling of 16258442 in words is "sixteen million, two hundred fifty-eight thousand, four hundred forty-two".