140400535402 has 8 divisors (see below), whose sum is σ = 211691999556. Its totient is φ = 69836535552.

The previous prime is 140400535343. The next prime is 140400535403. The reversal of 140400535402 is 204535004041.

It can be written as a sum of positive squares in 2 ways, for example, as 128243488321 + 12157047081 = 358111^2 + 110259^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (140400535403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181865593 + ... + 181866364.

Almost surely, 2^140400535402 is an apocalyptic number.

140400535402 is a deficient number, since it is larger than the sum of its proper divisors (71291464154).

140400535402 is a wasteful number, since it uses less digits than its factorization.

140400535402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363732152.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 140400535402 its reverse (204535004041), we get a palindrome (344935539443).

The spelling of 140400535402 in words is "one hundred forty billion, four hundred million, five hundred thirty-five thousand, four hundred two".