42131210220 has 108 divisors (see below), whose sum is σ = 140472259200. Its totient is φ = 10213621440.

The previous prime is 42131210201. The next prime is 42131210221. The reversal of 42131210220 is 2201213124.

It is a happy number.

42131210220 is a `hidden beast` number, since 421 + 3 + 1 + 21 + 0 + 220 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 42131210193 and 42131210202.

It is not an unprimeable number, because it can be changed into a prime (42131210221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 945420 + ... + 988979.

Almost surely, 2^42131210220 is an apocalyptic number.

It is an amenable number.

42131210220 is an abundant number, since it is smaller than the sum of its proper divisors (98341048980).

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

42131210220 is a wasteful number, since it uses less digits than its factorization.

42131210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934436 (or 1934420 counting only the distinct ones).

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

Adding to 42131210220 its reverse (2201213124), we get a palindrome (44332423344).

The spelling of 42131210220 in words is "forty-two billion, one hundred thirty-one million, two hundred ten thousand, two hundred twenty".