42764724 has 36 divisors (see below), whose sum is σ = 114460164. Its totient is φ = 13416192.

The previous prime is 42764723. The next prime is 42764773. The reversal of 42764724 is 42746724.

It is a happy number.

42764724 is a `hidden beast` number, since 4 + 2 + 7 + 647 + 2 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13927824 + 28836900 = 3732^2 + 5370^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42764723) 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 11 ways as a sum of consecutive naturals, for example, 34327 + ... + 35550.

It is an arithmetic number, because the mean of its divisors is an integer number (3179449).

Almost surely, 2^42764724 is an apocalyptic number.

It is an amenable number.

42764724 is an abundant number, since it is smaller than the sum of its proper divisors (71695440).

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

42764724 is a wasteful number, since it uses less digits than its factorization.

42764724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69904 (or 69899 counting only the distinct ones).

The product of its digits is 75264, while the sum is 36.

The square root of 42764724 is about 6539.4742907974. The cubic root of 42764724 is about 349.6996716193.

The spelling of 42764724 in words is "forty-two million, seven hundred sixty-four thousand, seven hundred twenty-four".