42752340 has 96 divisors (see below), whose sum is σ = 136321920. Its totient is φ = 11116800.

The previous prime is 42752327. The next prime is 42752341. The reversal of 42752340 is 4325724.

42752340 is a `hidden beast` number, since 427 + 5 + 234 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42752341) 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 31 ways as a sum of consecutive naturals, for example, 21175 + ... + 23105.

It is an arithmetic number, because the mean of its divisors is an integer number (1420020).

Almost surely, 2^42752340 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 42752340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68160960).

42752340 is an abundant number, since it is smaller than the sum of its proper divisors (93569580).

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

42752340 is a wasteful number, since it uses less digits than its factorization.

42752340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990 (or 1982 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 42752340 is about 6538.5273571348. The cubic root of 42752340 is about 349.6659124955.

The spelling of 42752340 in words is "forty-two million, seven hundred fifty-two thousand, three hundred forty".