42020040224 has 24 divisors (see below), whose sum is σ = 87593246748. Its totient is φ = 19774136320.

The previous prime is 42020040221. The next prime is 42020040319. The reversal of 42020040224 is 42204002024.

It can be written as a sum of positive squares in 2 ways, for example, as 38017200400 + 4002839824 = 194980^2 + 63268^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42020040196 and 42020040205.

It is not an unprimeable number, because it can be changed into a prime (42020040221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38620817 + ... + 38621904.

Almost surely, 2^42020040224 is an apocalyptic number.

It is an amenable number.

42020040224 is an abundant number, since it is smaller than the sum of its proper divisors (45573206524).

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

42020040224 is a wasteful number, since it uses less digits than its factorization.

42020040224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77242748 (or 77242740 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 42020040224 its reverse (42204002024), we get a palindrome (84224042248).

The spelling of 42020040224 in words is "forty-two billion, twenty million, forty thousand, two hundred twenty-four".