140400402 has 8 divisors (see below), whose sum is σ = 280800816. Its totient is φ = 46800132.

The previous prime is 140400401. The next prime is 140400413. The reversal of 140400402 is 204004041.

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

140400402 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (140400401) 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 3 ways as a sum of consecutive naturals, for example, 11700028 + ... + 11700039.

It is an arithmetic number, because the mean of its divisors is an integer number (35100102).

Almost surely, 2^140400402 is an apocalyptic number.

140400402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

140400402 is a wasteful number, since it uses less digits than its factorization.

140400402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23400072.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 140400402 is about 11849.0675582512. The cubic root of 140400402 is about 519.7439592555.

Adding to 140400402 its reverse (204004041), we get a palindrome (344404443).

The spelling of 140400402 in words is "one hundred forty million, four hundred thousand, four hundred two".