140538901 has 12 divisors (see below), whose sum is σ = 151997580. Its totient is φ = 129778880.

The previous prime is 140538899. The next prime is 140538911. The reversal of 140538901 is 109835041.

It can be written as a sum of positive squares in 2 ways, for example, as 60078001 + 80460900 = 7751^2 + 8970^2 .

It is not a de Polignac number, because 140538901 - 2¹ = 140538899 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 (140538911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10761 + ... + 19921.

It is an arithmetic number, because the mean of its divisors is an integer number (12666465).

Almost surely, 2^140538901 is an apocalyptic number.

It is an amenable number.

140538901 is a deficient number, since it is larger than the sum of its proper divisors (11458679).

140538901 is an equidigital number, since it uses as much as digits as its factorization.

140538901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9236 (or 9213 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 140538901 is about 11854.9104172069. The cubic root of 140538901 is about 519.9148048296.

The spelling of 140538901 in words is "one hundred forty million, five hundred thirty-eight thousand, nine hundred one".