140171901 has 4 divisors (see below), whose sum is σ = 186895872. Its totient is φ = 93447932.

The previous prime is 140171891. The next prime is 140171917. The reversal of 140171901 is 109171041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140171901 - 2⁵ = 140171869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140171921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23361981 + ... + 23361986.

It is an arithmetic number, because the mean of its divisors is an integer number (46723968).

Almost surely, 2^140171901 is an apocalyptic number.

It is an amenable number.

140171901 is a deficient number, since it is larger than the sum of its proper divisors (46723971).

140171901 is an equidigital number, since it uses as much as digits as its factorization.

140171901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46723970.

The product of its (nonzero) digits is 252, while the sum is 24.

The square root of 140171901 is about 11839.4214807988. The cubic root of 140171901 is about 519.4618458635.

The spelling of 140171901 in words is "one hundred forty million, one hundred seventy-one thousand, nine hundred one".