140323401 has 32 divisors (see below), whose sum is σ = 212150400. Its totient is φ = 91653120.

The previous prime is 140323399. The next prime is 140323427. The reversal of 140323401 is 104323041.

It is not a de Polignac number, because 140323401 - 2¹ = 140323399 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140323451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 342885 + ... + 343293.

It is an arithmetic number, because the mean of its divisors is an integer number (6629700).

Almost surely, 2^140323401 is an apocalyptic number.

It is an amenable number.

140323401 is a deficient number, since it is larger than the sum of its proper divisors (71826999).

140323401 is a wasteful number, since it uses less digits than its factorization.

140323401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 140323401 is about 11845.8178696112. The cubic root of 140323401 is about 519.6489259969.

Adding to 140323401 its reverse (104323041), we get a palindrome (244646442).

The spelling of 140323401 in words is "one hundred forty million, three hundred twenty-three thousand, four hundred one".