20143021040 has 20 divisors (see below), whose sum is σ = 46832524104. Its totient is φ = 8057208384.

The previous prime is 20143021037. The next prime is 20143021043. The reversal of 20143021040 is 4012034102.

It is an interprime number because it is at equal distance from previous prime (20143021037) and next prime (20143021043).

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20143021043) 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, 125893802 + ... + 125893961.

Almost surely, 2^20143021040 is an apocalyptic number.

20143021040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20143021040 is an abundant number, since it is smaller than the sum of its proper divisors (26689503064).

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

20143021040 is a wasteful number, since it uses less digits than its factorization.

20143021040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251787776 (or 251787770 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20143021040 its reverse (4012034102), we get a palindrome (24155055142).

The spelling of 20143021040 in words is "twenty billion, one hundred forty-three million, twenty-one thousand, forty".