42420004 has 48 divisors (see below), whose sum is σ = 85349376. Its totient is φ = 18260000.

The previous prime is 42419999. The next prime is 42420013. The reversal of 42420004 is 40002424.

It is a self number, because there is not a number n which added to its sum of digits gives 42420004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168879 + ... + 169129.

It is an arithmetic number, because the mean of its divisors is an integer number (1778112).

Almost surely, 2^42420004 is an apocalyptic number.

42420004 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

42420004 is an abundant number, since it is smaller than the sum of its proper divisors (42929372).

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

42420004 is a wasteful number, since it uses less digits than its factorization.

42420004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 42420004 is about 6513.0641022486. The cubic root of 42420004 is about 348.7575100621.

Adding to 42420004 its reverse (40002424), we get a palindrome (82422428).

The spelling of 42420004 in words is "forty-two million, four hundred twenty thousand, four".