140312400252 has 12 divisors (see below), whose sum is σ = 327395600616. Its totient is φ = 46770800080.

The previous prime is 140312400233. The next prime is 140312400253. The reversal of 140312400252 is 252004213041.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140312400253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5846349999 + ... + 5846350022.

It is an arithmetic number, because the mean of its divisors is an integer number (27282966718).

Almost surely, 2^140312400252 is an apocalyptic number.

140312400252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

140312400252 is an abundant number, since it is smaller than the sum of its proper divisors (187083200364).

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

140312400252 is a wasteful number, since it uses less digits than its factorization.

140312400252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11692700028 (or 11692700026 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 140312400252 its reverse (252004213041), we get a palindrome (392316613293).

The spelling of 140312400252 in words is "one hundred forty billion, three hundred twelve million, four hundred thousand, two hundred fifty-two".