140000155 has 4 divisors (see below), whose sum is σ = 168000192. Its totient is φ = 112000120.

The previous prime is 140000141. The next prime is 140000171. The reversal of 140000155 is 551000041.

It is a happy number.

140000155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-140000155 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14000011 + ... + 14000020.

It is an arithmetic number, because the mean of its divisors is an integer number (42000048).

Almost surely, 2^140000155 is an apocalyptic number.

140000155 is a deficient number, since it is larger than the sum of its proper divisors (28000037).

140000155 is an equidigital number, since it uses as much as digits as its factorization.

140000155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28000036.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 140000155 is about 11832.1661161429. The cubic root of 140000155 is about 519.2496018128.

Adding to 140000155 its reverse (551000041), we get a palindrome (691000196).

The spelling of 140000155 in words is "one hundred forty million, one hundred fifty-five", and thus it is an aban number.