140321024 has 72 divisors (see below), whose sum is σ = 297463320. Its totient is φ = 65945600.

The previous prime is 140321021. The next prime is 140321081. The reversal of 140321024 is 420123041.

It can be written as a sum of positive squares in 4 ways, for example, as 135424 + 140185600 = 368^2 + 11840^2 .

It is a junction number, because it is equal to n+sod(n) for n = 140320993 and 140321011.

It is not an unprimeable number, because it can be changed into a prime (140321021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304154 + ... + 304614.

It is an arithmetic number, because the mean of its divisors is an integer number (4131435).

Almost surely, 2^140321024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140321024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148731660).

140321024 is an abundant number, since it is smaller than the sum of its proper divisors (157142296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140321024 is an equidigital number, since it uses as much as digits as its factorization.

140321024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 140321024 is about 11845.7175384187. The cubic root of 140321024 is about 519.6459917928.

Adding to 140321024 its reverse (420123041), we get a palindrome (560444065).

The spelling of 140321024 in words is "one hundred forty million, three hundred twenty-one thousand, twenty-four".