42975240 has 128 divisors (see below), whose sum is σ = 160773120. Its totient is φ = 8928000.

The previous prime is 42975239. The next prime is 42975253. The reversal of 42975240 is 4257924.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6915 + ... + 11565.

It is an arithmetic number, because the mean of its divisors is an integer number (1256040).

Almost surely, 2^42975240 is an apocalyptic number.

42975240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42975240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80386560).

42975240 is an abundant number, since it is smaller than the sum of its proper divisors (117797880).

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

42975240 is a wasteful number, since it uses less digits than its factorization.

42975240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4683 (or 4679 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 42975240 is about 6555.5503201486. The cubic root of 42975240 is about 350.2725496117.

The spelling of 42975240 in words is "forty-two million, nine hundred seventy-five thousand, two hundred forty".