42143144420 has 48 divisors (see below), whose sum is σ = 96870810288. Its totient is φ = 15305448960.

The previous prime is 42143144399. The next prime is 42143144423. The reversal of 42143144420 is 2444134124.

It can be written as a sum of positive squares in 8 ways, for example, as 27681638884 + 14461505536 = 166378^2 + 120256^2 .

It is not an unprimeable number, because it can be changed into a prime (42143144423) 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, 1312739 + ... + 1344458.

It is an arithmetic number, because the mean of its divisors is an integer number (2018141881).

Almost surely, 2^42143144420 is an apocalyptic number.

It is an amenable number.

42143144420 is an abundant number, since it is smaller than the sum of its proper divisors (54727665868).

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

42143144420 is a wasteful number, since it uses less digits than its factorization.

42143144420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2657280 (or 2657278 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 42143144420 its reverse (2444134124), we get a palindrome (44587278544).

The spelling of 42143144420 in words is "forty-two billion, one hundred forty-three million, one hundred forty-four thousand, four hundred twenty".