105142027 has 4 divisors (see below), whose sum is σ = 105182416. Its totient is φ = 105101640.

The previous prime is 105142013. The next prime is 105142061. The reversal of 105142027 is 720241501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 720241501 = 7 ⋅102891643.

It is a cyclic number.

It is not a de Polignac number, because 105142027 - 2⁷ = 105141899 is a prime.

It is a super-2 number, since 2×105142027² = 22109691683337458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105141989 and 105142007.

It is not an unprimeable number, because it can be changed into a prime (105142007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15999 + ... + 21592.

It is an arithmetic number, because the mean of its divisors is an integer number (26295604).

Almost surely, 2^105142027 is an apocalyptic number.

105142027 is a deficient number, since it is larger than the sum of its proper divisors (40389).

105142027 is an equidigital number, since it uses as much as digits as its factorization.

105142027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40388.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 105142027 is about 10253.8786320104. The cubic root of 105142027 is about 471.9820132833.

Adding to 105142027 its reverse (720241501), we get a palindrome (825383528).

The spelling of 105142027 in words is "one hundred five million, one hundred forty-two thousand, twenty-seven".