42000402022420 has 12 divisors (see below), whose sum is σ = 88200844247124. Its totient is φ = 16800160808960.

The previous prime is 42000402022409. The next prime is 42000402022471. The reversal of 42000402022420 is 2422020400024.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26469646157956 + 15530755864464 = 5144866^2 + 3940908^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42000402022391 and 42000402022400.

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, 1050010050541 + ... + 1050010050580.

It is an arithmetic number, because the mean of its divisors is an integer number (7350070353927).

Almost surely, 2^{42000402022420} is an apocalyptic number.

It is an amenable number.

42000402022420 is an abundant number, since it is smaller than the sum of its proper divisors (46200442224704).

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

42000402022420 is a wasteful number, since it uses less digits than its factorization.

42000402022420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100020101130 (or 2100020101128 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 42000402022420 its reverse (2422020400024), we get a palindrome (44422422422444).

The spelling of 42000402022420 in words is "forty-two trillion, four hundred two million, twenty-two thousand, four hundred twenty".