20143021140 has 96 divisors (see below), whose sum is σ = 68364213120. Its totient is φ = 4883155200.

The previous prime is 20143021123. The next prime is 20143021147. The reversal of 20143021140 is 4112034102.

20143021140 is a `hidden beast` number, since 20 + 1 + 430 + 211 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20143021147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1689601 + ... + 1701480.

It is an arithmetic number, because the mean of its divisors is an integer number (712127220).

Almost surely, 2^20143021140 is an apocalyptic number.

20143021140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20143021140 is an abundant number, since it is smaller than the sum of its proper divisors (48221191980).

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

20143021140 is a wasteful number, since it uses less digits than its factorization.

20143021140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3391110 (or 3391102 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20143021140 its reverse (4112034102), we get a palindrome (24255055242).

The spelling of 20143021140 in words is "twenty billion, one hundred forty-three million, twenty-one thousand, one hundred forty".