105997442 has 4 divisors (see below), whose sum is σ = 158996166. Its totient is φ = 52998720.

The previous prime is 105997439. The next prime is 105997469. The reversal of 105997442 is 244799501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244799501 = 5483 ⋅44647.

It can be written as a sum of positive squares in only one way, i.e., 103408561 + 2588881 = 10169^2 + 1609^2 .

It is a super-2 number, since 2×105997442² = 22470915421086728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105997442.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26499359 + ... + 26499362.

Almost surely, 2^105997442 is an apocalyptic number.

105997442 is a deficient number, since it is larger than the sum of its proper divisors (52998724).

105997442 is an equidigital number, since it uses as much as digits as its factorization.

105997442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52998723.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 105997442 is about 10295.5059127757. The cubic root of 105997442 is about 473.2585421515.

The spelling of 105997442 in words is "one hundred five million, nine hundred ninety-seven thousand, four hundred forty-two".