140321286 has 48 divisors (see below), whose sum is σ = 348979488. Its totient is φ = 39916800.

The previous prime is 140321243. The next prime is 140321287. The reversal of 140321286 is 682123041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140321287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28056 + ... + 32676.

It is an arithmetic number, because the mean of its divisors is an integer number (7270406).

Almost surely, 2^140321286 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140321286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174489744).

140321286 is an abundant number, since it is smaller than the sum of its proper divisors (208658202).

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

140321286 is a wasteful number, since it uses less digits than its factorization.

140321286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4877 (or 4874 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 140321286 is about 11845.7285972624. The cubic root of 140321286 is about 519.6463152111.

The spelling of 140321286 in words is "one hundred forty million, three hundred twenty-one thousand, two hundred eighty-six".