42402013330420 has 24 divisors (see below), whose sum is σ = 94282123758984. Its totient is φ = 15963110900736.

The previous prime is 42402013330361. The next prime is 42402013330423. The reversal of 42402013330420 is 2403331020424.

It can be written as a sum of positive squares in 4 ways, for example, as 9999028191376 + 32402985139044 = 3162124^2 + 5692362^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42402013330423) 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, 62355901617 + ... + 62355902296.

It is an arithmetic number, because the mean of its divisors is an integer number (3928421823291).

Almost surely, 2^{42402013330420} is an apocalyptic number.

It is an amenable number.

42402013330420 is an abundant number, since it is smaller than the sum of its proper divisors (51880110428564).

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

42402013330420 is a wasteful number, since it uses less digits than its factorization.

42402013330420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124711803939 (or 124711803937 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 42402013330420 its reverse (2403331020424), we get a palindrome (44805344350844).

The spelling of 42402013330420 in words is "forty-two trillion, four hundred two billion, thirteen million, three hundred thirty thousand, four hundred twenty".