42402042424 has 32 divisors (see below), whose sum is σ = 91268997120. Its totient is φ = 18090808416.

The previous prime is 42402042407. The next prime is 42402042433. The reversal of 42402042424 is 42424020424.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 42402042392 and 42402042401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1685224 + ... + 1710199.

It is an arithmetic number, because the mean of its divisors is an integer number (2852156160).

Almost surely, 2^42402042424 is an apocalyptic number.

It is an amenable number.

42402042424 is an abundant number, since it is smaller than the sum of its proper divisors (48866954696).

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

42402042424 is a wasteful number, since it uses less digits than its factorization.

42402042424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3395659 (or 3395655 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 42402042424 its reverse (42424020424), we get a palindrome (84826062848).

The spelling of 42402042424 in words is "forty-two billion, four hundred two million, forty-two thousand, four hundred twenty-four".