42721662 has 8 divisors (see below), whose sum is σ = 85443336. Its totient is φ = 14240552.

The previous prime is 42721639. The next prime is 42721681. The reversal of 42721662 is 26612724.

It is a sphenic number, since it is the product of 3 distinct primes.

42721662 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3560133 + ... + 3560144.

It is an arithmetic number, because the mean of its divisors is an integer number (10680417).

Almost surely, 2^42721662 is an apocalyptic number.

42721662 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42721662 is a wasteful number, since it uses less digits than its factorization.

42721662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7120282.

The product of its digits is 8064, while the sum is 30.

The square root of 42721662 is about 6536.1809950460. The cubic root of 42721662 is about 349.5822553381.

The spelling of 42721662 in words is "forty-two million, seven hundred twenty-one thousand, six hundred sixty-two".