140171801 has 24 divisors (see below), whose sum is σ = 183640320. Its totient is φ = 105688800.

The previous prime is 140171791. The next prime is 140171807. The reversal of 140171801 is 108171041.

It is a happy number.

It is not a de Polignac number, because 140171801 - 2¹⁸ = 139909657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140171807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12515 + ... + 20903.

It is an arithmetic number, because the mean of its divisors is an integer number (7651680).

Almost surely, 2^140171801 is an apocalyptic number.

140171801 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140171801 is a deficient number, since it is larger than the sum of its proper divisors (43468519).

140171801 is a wasteful number, since it uses less digits than its factorization.

140171801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8445 (or 8438 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 23.

The square root of 140171801 is about 11839.4172576187. The cubic root of 140171801 is about 519.4617223337.

The spelling of 140171801 in words is "one hundred forty million, one hundred seventy-one thousand, eight hundred one".