105145000042 has 4 divisors (see below), whose sum is σ = 157717500066. Its totient is φ = 52572500020.

The previous prime is 105145000027. The next prime is 105145000057. The reversal of 105145000042 is 240000541501.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (105145000027) and next prime (105145000057).

It can be written as a sum of positive squares in only one way, i.e., 89664912481 + 15480087561 = 299441^2 + 124419^2 .

It is a super-2 number, since 2×105145000042² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105144999977 and 105145000022.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26286250009 + ... + 26286250012.

Almost surely, 2^105145000042 is an apocalyptic number.

105145000042 is a deficient number, since it is larger than the sum of its proper divisors (52572500024).

105145000042 is an equidigital number, since it uses as much as digits as its factorization.

105145000042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52572500023.

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 105145000042 its reverse (240000541501), we get a palindrome (345145541543).

The spelling of 105145000042 in words is "one hundred five billion, one hundred forty-five million, forty-two", and thus it is an aban number.