16481242 has 4 divisors (see below), whose sum is σ = 24721866. Its totient is φ = 8240620.

The previous prime is 16481239. The next prime is 16481273. The reversal of 16481242 is 24218461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24218461 = 37 ⋅654553.

It can be written as a sum of positive squares in only one way, i.e., 8590761 + 7890481 = 2931^2 + 2809^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16481242.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4120309 + ... + 4120312.

Almost surely, 2^16481242 is an apocalyptic number.

16481242 is a deficient number, since it is larger than the sum of its proper divisors (8240624).

16481242 is an equidigital number, since it uses as much as digits as its factorization.

16481242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8240623.

The product of its digits is 3072, while the sum is 28.

The square root of 16481242 is about 4059.7095955253. The cubic root of 16481242 is about 254.4856581170.

It can be divided in two parts, 164 and 81242, that added together give a triangular number (81406 = T₄₀₃).

The spelling of 16481242 in words is "sixteen million, four hundred eighty-one thousand, two hundred forty-two".