42404002420 has 96 divisors (see below), whose sum is σ = 99335779200. Its totient is φ = 15097065984.

The previous prime is 42404002369. The next prime is 42404002427. The reversal of 42404002420 is 2420040424.

It is a junction number, because it is equal to n+sod(n) for n = 42404002391 and 42404002400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42404002427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6473587 + ... + 6480133.

It is an arithmetic number, because the mean of its divisors is an integer number (1034747700).

Almost surely, 2^42404002420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42404002420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49667889600).

42404002420 is an abundant number, since it is smaller than the sum of its proper divisors (56931776780).

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

42404002420 is a wasteful number, since it uses less digits than its factorization.

42404002420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7457 (or 7455 counting only the distinct ones).

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

Adding to 42404002420 its reverse (2420040424), we get a palindrome (44824042844).

The spelling of 42404002420 in words is "forty-two billion, four hundred four million, two thousand, four hundred twenty".