140402322 has 40 divisors (see below), whose sum is σ = 317757132. Its totient is φ = 46332000.

The previous prime is 140402321. The next prime is 140402323. The reversal of 140402322 is 223204041.

140402322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (140402321) and next prime (140402323).

It can be written as a sum of positive squares in 2 ways, for example, as 139216401 + 1185921 = 11799^2 + 1089^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 140402295 and 140402304.

It is not an unprimeable number, because it can be changed into a prime (140402321) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12072 + ... + 20652.

Almost surely, 2^140402322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140402322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158878566).

140402322 is an abundant number, since it is smaller than the sum of its proper divisors (177354810).

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

140402322 is a wasteful number, since it uses less digits than its factorization.

140402322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8696 (or 8687 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 140402322 is about 11849.1485770075. The cubic root of 140402322 is about 519.7463284412.

Adding to 140402322 its reverse (223204041), we get a palindrome (363606363).

The spelling of 140402322 in words is "one hundred forty million, four hundred two thousand, three hundred twenty-two".