140321401 has 12 divisors (see below), whose sum is σ = 159560100. Its totient is φ = 123163040.

The previous prime is 140321399. The next prime is 140321437. The reversal of 140321401 is 104123041.

It can be written as a sum of positive squares in 2 ways, for example, as 45765225 + 94556176 = 6765^2 + 9724^2 .

It is not a de Polignac number, because 140321401 - 2¹ = 140321399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140321471) 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 11 ways as a sum of consecutive naturals, for example, 16486 + ... + 23503.

It is an arithmetic number, because the mean of its divisors is an integer number (13296675).

Almost surely, 2^140321401 is an apocalyptic number.

140321401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140321401 is a deficient number, since it is larger than the sum of its proper divisors (19238699).

140321401 is a wasteful number, since it uses less digits than its factorization.

140321401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40040 (or 40029 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 140321401 is about 11845.7334513317. The cubic root of 140321401 is about 519.6464571694.

Adding to 140321401 its reverse (104123041), we get a palindrome (244444442).

The spelling of 140321401 in words is "one hundred forty million, three hundred twenty-one thousand, four hundred one".