42000424040420 has 12 divisors (see below), whose sum is σ = 88200890484924. Its totient is φ = 16800169616160.

The previous prime is 42000424040413. The next prime is 42000424040489. The reversal of 42000424040420 is 2404042400024.

It can be written as a sum of positive squares in 2 ways, for example, as 7341206005156 + 34659218035264 = 2709466^2 + 5887208^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42000424040420.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050010600991 + ... + 1050010601030.

It is an arithmetic number, because the mean of its divisors is an integer number (7350074207077).

Almost surely, 2^{42000424040420} is an apocalyptic number.

It is an amenable number.

42000424040420 is an abundant number, since it is smaller than the sum of its proper divisors (46200466444504).

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

42000424040420 is a wasteful number, since it uses less digits than its factorization.

42000424040420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100021202030 (or 2100021202028 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 42000424040420 its reverse (2404042400024), we get a palindrome (44404466440444).

The spelling of 42000424040420 in words is "forty-two trillion, four hundred twenty-four million, forty thousand, four hundred twenty".