42987430 has 16 divisors (see below), whose sum is σ = 77456160. Its totient is φ = 17177472.

The previous prime is 42987403. The next prime is 42987431. The reversal of 42987430 is 3478924.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 42987430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42987431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13447 + ... + 16333.

It is an arithmetic number, because the mean of its divisors is an integer number (4841010).

Almost surely, 2^42987430 is an apocalyptic number.

42987430 is a deficient number, since it is larger than the sum of its proper divisors (34468730).

42987430 is a wasteful number, since it uses less digits than its factorization.

42987430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4383.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 42987430 is about 6556.4800007321. The cubic root of 42987430 is about 350.3056649492.

The spelling of 42987430 in words is "forty-two million, nine hundred eighty-seven thousand, four hundred thirty".