140130405 has 40 divisors (see below), whose sum is σ = 265986072. Its totient is φ = 70336512.

The previous prime is 140130391. The next prime is 140130443. The reversal of 140130405 is 504031041.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21734244 + 118396161 = 4662^2 + 10881^2 .

It is not a de Polignac number, because 140130405 - 2¹⁴ = 140114021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3292 + ... + 17061.

Almost surely, 2^140130405 is an apocalyptic number.

140130405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140130405 is a deficient number, since it is larger than the sum of its proper divisors (125855667).

140130405 is a wasteful number, since it uses less digits than its factorization.

140130405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20387 (or 20378 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 140130405 is about 11837.6689005902. The cubic root of 140130405 is about 519.4105809142.

Adding to 140130405 its reverse (504031041), we get a palindrome (644161446).

The spelling of 140130405 in words is "one hundred forty million, one hundred thirty thousand, four hundred five".