42430540 has 24 divisors (see below), whose sum is σ = 89323920. Its totient is φ = 16930368.

The previous prime is 42430517. The next prime is 42430543. The reversal of 42430540 is 4503424.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42430543) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6466 + ... + 11254.

It is an arithmetic number, because the mean of its divisors is an integer number (3721830).

Almost surely, 2^42430540 is an apocalyptic number.

It is an amenable number.

42430540 is an abundant number, since it is smaller than the sum of its proper divisors (46893380).

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

42430540 is a wasteful number, since it uses less digits than its factorization.

42430540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5241 (or 5239 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 42430540 is about 6513.8728879216. The cubic root of 42430540 is about 348.7863816997.

Adding to 42430540 its reverse (4503424), we get a palindrome (46933964).

The spelling of 42430540 in words is "forty-two million, four hundred thirty thousand, five hundred forty".