42402421424 has 40 divisors (see below), whose sum is σ = 90851043792. Its totient is φ = 19009797120.

The previous prime is 42402421409. The next prime is 42402421447. The reversal of 42402421424 is 42412420424.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1637309 + ... + 1663004.

Almost surely, 2^42402421424 is an apocalyptic number.

42402421424 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

42402421424 is an abundant number, since it is smaller than the sum of its proper divisors (48448622368).

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

42402421424 is a wasteful number, since it uses less digits than its factorization.

42402421424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300405 (or 3300399 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 29.

Adding to 42402421424 its reverse (42412420424), we get a palindrome (84814841848).

The spelling of 42402421424 in words is "forty-two billion, four hundred two million, four hundred twenty-one thousand, four hundred twenty-four".