140142105 has 24 divisors (see below), whose sum is σ = 253476288. Its totient is φ = 71492256.

The previous prime is 140142083. The next prime is 140142113. The reversal of 140142105 is 501241041.

It is not a de Polignac number, because 140142105 - 2¹⁵ = 140109337 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66667 + ... + 68736.

It is an arithmetic number, because the mean of its divisors is an integer number (10561512).

Almost surely, 2^140142105 is an apocalyptic number.

140142105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140142105 is a deficient number, since it is larger than the sum of its proper divisors (113334183).

140142105 is a wasteful number, since it uses less digits than its factorization.

140142105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135437 (or 135434 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 140142105 is about 11838.1630754100. The cubic root of 140142105 is about 519.4250363416.

Adding to 140142105 its reverse (501241041), we get a palindrome (641383146).

The spelling of 140142105 in words is "one hundred forty million, one hundred forty-two thousand, one hundred five".