42121442413220 has 48 divisors (see below), whose sum is σ = 93953718255600. Its totient is φ = 15807460552704.

The previous prime is 42121442413151. The next prime is 42121442413313. The reversal of 42121442413220 is 2231424412124.

It can be written as a sum of positive squares in 8 ways, for example, as 115774145536 + 42005668267684 = 340256^2 + 6481178^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195296945 + ... + 195512504.

It is an arithmetic number, because the mean of its divisors is an integer number (1957369130325).

Almost surely, 2^{42121442413220} is an apocalyptic number.

It is an amenable number.

42121442413220 is an abundant number, since it is smaller than the sum of its proper divisors (51832275842380).

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

42121442413220 is a wasteful number, since it uses less digits than its factorization.

42121442413220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390809792 (or 390809790 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 42121442413220 its reverse (2231424412124), we get a palindrome (44352866825344).

The spelling of 42121442413220 in words is "forty-two trillion, one hundred twenty-one billion, four hundred forty-two million, four hundred thirteen thousand, two hundred twenty".