140161605 has 16 divisors (see below), whose sum is σ = 226572864. Its totient is φ = 73981440.

The previous prime is 140161601. The next prime is 140161607. The reversal of 140161605 is 506161041.

It is not a de Polignac number, because 140161605 - 2² = 140161601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140161601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46711 + ... + 49620.

It is an arithmetic number, because the mean of its divisors is an integer number (14160804).

Almost surely, 2^140161605 is an apocalyptic number.

140161605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140161605 is a deficient number, since it is larger than the sum of its proper divisors (86411259).

140161605 is an equidigital number, since it uses as much as digits as its factorization.

140161605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96436.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 140161605 is about 11838.9866542707. The cubic root of 140161605 is about 519.4491269327.

The spelling of 140161605 in words is "one hundred forty million, one hundred sixty-one thousand, six hundred five".