140043402 has 12 divisors (see below), whose sum is σ = 303427410. Its totient is φ = 46681128.

The previous prime is 140043401. The next prime is 140043427. The reversal of 140043402 is 204340041.

140043402 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 133888041 + 6155361 = 11571^2 + 2481^2 .

It is a super-2 number, since 2×140043402² = 39224308887467208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 7780189 = 140043402 / (1 + 4 + 0 + 0 + 4 + 3 + 4 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (140043401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3890077 + ... + 3890112.

Almost surely, 2^140043402 is an apocalyptic number.

140043402 is an abundant number, since it is smaller than the sum of its proper divisors (163384008).

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

140043402 is a wasteful number, since it uses less digits than its factorization.

140043402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7780197 (or 7780194 counting only the distinct ones).

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

The square root of 140043402 is about 11833.9934933225. The cubic root of 140043402 is about 519.3030628861.

Adding to 140043402 its reverse (204340041), we get a palindrome (344383443).

The spelling of 140043402 in words is "one hundred forty million, forty-three thousand, four hundred two".