16658242 has 8 divisors (see below), whose sum is σ = 25077132. Its totient is φ = 8299200.

The previous prime is 16658221. The next prime is 16658263. The reversal of 16658242 is 24285661.

It is an interprime number because it is at equal distance from previous prime (16658221) and next prime (16658263).

It can be written as a sum of positive squares in 2 ways, for example, as 14523721 + 2134521 = 3811^2 + 1461^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 16658198 and 16658207.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14259 + ... + 15382.

Almost surely, 2^16658242 is an apocalyptic number.

16658242 is a deficient number, since it is larger than the sum of its proper divisors (8418890).

16658242 is a wasteful number, since it uses less digits than its factorization.

16658242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29924.

The product of its digits is 23040, while the sum is 34.

The square root of 16658242 is about 4081.4509674869. The cubic root of 16658242 is about 255.3934308671.

It can be divided in two parts, 16658 and 242, that added together give a square (16900 = 130²).

The spelling of 16658242 in words is "sixteen million, six hundred fifty-eight thousand, two hundred forty-two".