140023402452 has 144 divisors (see below), whose sum is σ = 369771816960. Its totient is φ = 44621127936.

The previous prime is 140023402399. The next prime is 140023402487. The reversal of 140023402452 is 254204320041.

140023402452 is a `hidden beast` number, since 1 + 400 + 234 + 0 + 24 + 5 + 2 = 666.

It is a super-2 number, since 2×140023402452² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 109649638 + ... + 109650914.

It is an arithmetic number, because the mean of its divisors is an integer number (2567859840).

Almost surely, 2^140023402452 is an apocalyptic number.

140023402452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140023402452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184885908480).

140023402452 is an abundant number, since it is smaller than the sum of its proper divisors (229748414508).

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

140023402452 is a wasteful number, since it uses less digits than its factorization.

140023402452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2270 (or 2265 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 140023402452 its reverse (254204320041), we get a palindrome (394227722493).

The spelling of 140023402452 in words is "one hundred forty billion, twenty-three million, four hundred two thousand, four hundred fifty-two".