140406105145 has 8 divisors (see below), whose sum is σ = 170033082120. Its totient is φ = 111294380160.

The previous prime is 140406105131. The next prime is 140406105149. The reversal of 140406105145 is 541501604041.

It can be written as a sum of positive squares in 4 ways, for example, as 508412304 + 139897692841 = 22548^2 + 374029^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140406105145 - 2¹⁹ = 140405580857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140406105149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128812396 + ... + 128813485.

It is an arithmetic number, because the mean of its divisors is an integer number (21254135265).

Almost surely, 2^140406105145 is an apocalyptic number.

It is an amenable number.

140406105145 is a deficient number, since it is larger than the sum of its proper divisors (29626976975).

140406105145 is a wasteful number, since it uses less digits than its factorization.

140406105145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257625995.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 140406105145 its reverse (541501604041), we get a palindrome (681907709186).

The spelling of 140406105145 in words is "one hundred forty billion, four hundred six million, one hundred five thousand, one hundred forty-five".