105142222 has 4 divisors (see below), whose sum is σ = 157713336. Its totient is φ = 52571110.

The previous prime is 105142217. The next prime is 105142231. The reversal of 105142222 is 222241501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222241501 = 43 ⋅5168407.

It is a super-2 number, since 2×105142222² = 22109773694194568, 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 105142222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26285554 + ... + 26285557.

It is an arithmetic number, because the mean of its divisors is an integer number (39428334).

Almost surely, 2^105142222 is an apocalyptic number.

105142222 is a deficient number, since it is larger than the sum of its proper divisors (52571114).

105142222 is an equidigital number, since it uses as much as digits as its factorization.

105142222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52571113.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 105142222 is about 10253.8881406031. Note that the first 3 decimals coincide. The cubic root of 105142222 is about 471.9823050678.

Adding to 105142222 its reverse (222241501), we get a palindrome (327383723).

The spelling of 105142222 in words is "one hundred five million, one hundred forty-two thousand, two hundred twenty-two".