42143122320420 has 96 divisors (see below), whose sum is σ = 129710740110336. Its totient is φ = 10138525820800.

The previous prime is 42143122320379. The next prime is 42143122320421. The reversal of 42143122320420 is 2402322134124.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (42143122320421) 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, 243628104 + ... + 243801023.

It is an arithmetic number, because the mean of its divisors is an integer number (1351153542816).

Almost surely, 2^{42143122320420} is an apocalyptic number.

It is an amenable number.

42143122320420 is an abundant number, since it is smaller than the sum of its proper divisors (87567617789916).

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

42143122320420 is a wasteful number, since it uses less digits than its factorization.

42143122320420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487429281 (or 487429279 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 42143122320420 its reverse (2402322134124), we get a palindrome (44545444454544).

The spelling of 42143122320420 in words is "forty-two trillion, one hundred forty-three billion, one hundred twenty-two million, three hundred twenty thousand, four hundred twenty".