42975744 has 120 divisors (see below), whose sum is σ = 133415568. Its totient is φ = 12257280.

The previous prime is 42975733. The next prime is 42975773. The reversal of 42975744 is 44757924.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 42975696 and 42975705.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74979 + ... + 75549.

Almost surely, 2^42975744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42975744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66707784).

42975744 is an abundant number, since it is smaller than the sum of its proper divisors (90439824).

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

42975744 is an equidigital number, since it uses as much as digits as its factorization.

42975744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606 (or 583 counting only the distinct ones).

The product of its digits is 282240, while the sum is 42.

The square root of 42975744 is about 6555.5887607445. The cubic root of 42975744 is about 350.2739189015.

The spelling of 42975744 in words is "forty-two million, nine hundred seventy-five thousand, seven hundred forty-four".