140031402 has 64 divisors (see below), whose sum is σ = 333324288. Its totient is φ = 38376000.

The previous prime is 140031361. The next prime is 140031403. The reversal of 140031402 is 204130041.

It is not an unprimeable number, because it can be changed into a prime (140031403) 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 31 ways as a sum of consecutive naturals, for example, 170152 + ... + 170972.

It is an arithmetic number, because the mean of its divisors is an integer number (5208192).

Almost surely, 2^140031402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140031402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166662144).

140031402 is an abundant number, since it is smaller than the sum of its proper divisors (193292886).

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

140031402 is a wasteful number, since it uses less digits than its factorization.

140031402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 140031402 is about 11833.4864684927. The cubic root of 140031402 is about 519.2882298304.

Adding to 140031402 its reverse (204130041), we get a palindrome (344161443).

The spelling of 140031402 in words is "one hundred forty million, thirty-one thousand, four hundred two".