143445420105 has 32 divisors (see below), whose sum is σ = 252426392064. Its totient is φ = 69116741376.

The previous prime is 143445420071. The next prime is 143445420149. The reversal of 143445420105 is 501024544341.

It is a happy number.

It is not a de Polignac number, because 143445420105 - 2⁸ = 143445419849 is a prime.

It is a super-2 number, since 2×143445420105² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7816554 + ... + 7834883.

It is an arithmetic number, because the mean of its divisors is an integer number (7888324752).

Almost surely, 2^143445420105 is an apocalyptic number.

143445420105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

143445420105 is a deficient number, since it is larger than the sum of its proper divisors (108980971959).

143445420105 is a wasteful number, since it uses less digits than its factorization.

143445420105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15651505.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 143445420105 its reverse (501024544341), we get a palindrome (644469964446).

The spelling of 143445420105 in words is "one hundred forty-three billion, four hundred forty-five million, four hundred twenty thousand, one hundred five".