140211001 has 18 divisors (see below), whose sum is σ = 166035870. Its totient is φ = 118056960.

The previous prime is 140210989. The next prime is 140211031. The reversal of 140211001 is 100112041.

It can be written as a sum of positive squares in 3 ways, for example, as 9703225 + 130507776 = 3115^2 + 11424^2 .

It is not a de Polignac number, because 140211001 - 2¹³ = 140202809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140211031) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 181945 + ... + 182713.

It is an arithmetic number, because the mean of its divisors is an integer number (9224215).

Almost surely, 2^140211001 is an apocalyptic number.

It is an amenable number.

140211001 is a deficient number, since it is larger than the sum of its proper divisors (25824869).

140211001 is an frugal number, since it uses more digits than its factorization.

140211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905 (or 837 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 140211001 is about 11841.0726287782. The cubic root of 140211001 is about 519.5101414914.

Adding to 140211001 its reverse (100112041), we get a palindrome (240323042).

It can be divided in two parts, 1402 and 11001, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 140211001 in words is "one hundred forty million, two hundred eleven thousand, one".