42121422022004 has 12 divisors (see below), whose sum is σ = 79382679964644. Its totient is φ = 19440656317824.

The previous prime is 42121422021983. The next prime is 42121422022021. The reversal of 42121422022004 is 40022022412124.

It can be written as a sum of positive squares in 2 ways, for example, as 9098355257104 + 33023066764900 = 3016348^2 + 5746570^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

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, 405013673237 + ... + 405013673340.

It is an arithmetic number, because the mean of its divisors is an integer number (6615223330387).

Almost surely, 2^{42121422022004} is an apocalyptic number.

It is an amenable number.

42121422022004 is a deficient number, since it is larger than the sum of its proper divisors (37261257942640).

42121422022004 is a wasteful number, since it uses less digits than its factorization.

42121422022004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810027346594 (or 810027346592 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 42121422022004 its reverse (40022022412124), we get a palindrome (82143444434128).

The spelling of 42121422022004 in words is "forty-two trillion, one hundred twenty-one billion, four hundred twenty-two million, twenty-two thousand, four".