105161125142 has 4 divisors (see below), whose sum is σ = 157741687716. Its totient is φ = 52580562570.

The previous prime is 105161125141. The next prime is 105161125189. The reversal of 105161125142 is 241521161501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241521161501 = 19 ⋅12711640079.

It is a super-2 number, since 2×105161125142² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105161125141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26290281284 + ... + 26290281287.

It is an arithmetic number, because the mean of its divisors is an integer number (39435421929).

Almost surely, 2^105161125142 is an apocalyptic number.

105161125142 is a deficient number, since it is larger than the sum of its proper divisors (52580562574).

105161125142 is an equidigital number, since it uses as much as digits as its factorization.

105161125142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52580562573.

The product of its (nonzero) digits is 2400, while the sum is 29.

Adding to 105161125142 its reverse (241521161501), we get a palindrome (346682286643).

The spelling of 105161125142 in words is "one hundred five billion, one hundred sixty-one million, one hundred twenty-five thousand, one hundred forty-two".