42331421121420 has 24 divisors (see below), whose sum is σ = 118527979140144. Its totient is φ = 11288378965696.

The previous prime is 42331421121389. The next prime is 42331421121421. The reversal of 42331421121420 is 2412112413324.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (42331421121421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352761842619 + ... + 352761842738.

It is an arithmetic number, because the mean of its divisors is an integer number (4938665797506).

Almost surely, 2^{42331421121420} is an apocalyptic number.

It is an amenable number.

42331421121420 is an abundant number, since it is smaller than the sum of its proper divisors (76196558018724).

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

42331421121420 is a wasteful number, since it uses less digits than its factorization.

42331421121420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705523685369 (or 705523685367 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 42331421121420 its reverse (2412112413324), we get a palindrome (44743533534744).

The spelling of 42331421121420 in words is "forty-two trillion, three hundred thirty-one billion, four hundred twenty-one million, one hundred twenty-one thousand, four hundred twenty".