106243442 has 4 divisors (see below), whose sum is σ = 159365166. Its totient is φ = 53121720.

The previous prime is 106243427. The next prime is 106243447. The reversal of 106243442 is 244342601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244342601 = 12241 ⋅19961.

It can be written as a sum of positive squares in only one way, i.e., 70375321 + 35868121 = 8389^2 + 5989^2 .

It is a super-2 number, since 2×106243442² = 22575337936014728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106243447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26560859 + ... + 26560862.

Almost surely, 2^106243442 is an apocalyptic number.

106243442 is a deficient number, since it is larger than the sum of its proper divisors (53121724).

106243442 is an equidigital number, since it uses as much as digits as its factorization.

106243442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53121723.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 106243442 is about 10307.4459494096. The cubic root of 106243442 is about 473.6243737884.

The spelling of 106243442 in words is "one hundred six million, two hundred forty-three thousand, four hundred forty-two".