40421020143 has 16 divisors (see below), whose sum is σ = 61716404736. Its totient is φ = 23051799840.

The previous prime is 40421020049. The next prime is 40421020151. The reversal of 40421020143 is 34102012404.

It is not a de Polignac number, because 40421020143 - 2¹⁴ = 40421003759 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40421020163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1902768 + ... + 1923893.

It is an arithmetic number, because the mean of its divisors is an integer number (3857275296).

Almost surely, 2^40421020143 is an apocalyptic number.

40421020143 is a deficient number, since it is larger than the sum of its proper divisors (21295384593).

40421020143 is a wasteful number, since it uses less digits than its factorization.

40421020143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3827174.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 40421020143 its reverse (34102012404), we get a palindrome (74523032547).

The spelling of 40421020143 in words is "forty billion, four hundred twenty-one million, twenty thousand, one hundred forty-three".