105142066 has 4 divisors (see below), whose sum is σ = 157713102. Its totient is φ = 52571032.

The previous prime is 105142061. The next prime is 105142073. The reversal of 105142066 is 660241501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 660241501 = 1447 ⋅456283.

It can be written as a sum of positive squares in only one way, i.e., 85026841 + 20115225 = 9221^2 + 4485^2 .

It is a super-2 number, since 2×105142066² = 22109708085496712, 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 105142066.

It is not an unprimeable number, because it can be changed into a prime (105142061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26285515 + ... + 26285518.

Almost surely, 2^105142066 is an apocalyptic number.

105142066 is a deficient number, since it is larger than the sum of its proper divisors (52571036).

105142066 is an equidigital number, since it uses as much as digits as its factorization.

105142066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52571035.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 105142066 is about 10253.8805337297. The cubic root of 105142066 is about 471.9820716402.

Adding to 105142066 its reverse (660241501), we get a palindrome (765383567).

The spelling of 105142066 in words is "one hundred five million, one hundred forty-two thousand, sixty-six".