42163240 has 32 divisors (see below), whose sum is σ = 108420480. Its totient is φ = 14455872.

The previous prime is 42163237. The next prime is 42163241. The reversal of 42163240 is 4236124.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42163241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75012 + ... + 75571.

It is an arithmetic number, because the mean of its divisors is an integer number (3388140).

Almost surely, 2^42163240 is an apocalyptic number.

42163240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42163240 is an abundant number, since it is smaller than the sum of its proper divisors (66257240).

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

42163240 is a wasteful number, since it uses less digits than its factorization.

42163240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150601 (or 150597 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 42163240 is about 6493.3227241529. The cubic root of 42163240 is about 348.0524208697.

Adding to 42163240 its reverse (4236124), we get a palindrome (46399364).

The spelling of 42163240 in words is "forty-two million, one hundred sixty-three thousand, two hundred forty".