42741521 has 8 divisors (see below), whose sum is σ = 44850624. Its totient is φ = 40653360.

The previous prime is 42741499. The next prime is 42741533. The reversal of 42741521 is 12514724.

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

It is a cyclic number.

It is not a de Polignac number, because 42741521 - 2¹⁸ = 42479377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42741581) 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 7 ways as a sum of consecutive naturals, for example, 971 + ... + 9296.

It is an arithmetic number, because the mean of its divisors is an integer number (5606328).

Almost surely, 2^42741521 is an apocalyptic number.

It is an amenable number.

42741521 is a deficient number, since it is larger than the sum of its proper divisors (2109103).

42741521 is a wasteful number, since it uses less digits than its factorization.

42741521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10471.

The product of its digits is 2240, while the sum is 26.

The square root of 42741521 is about 6537.6999778209. The cubic root of 42741521 is about 349.6364142687.

The spelling of 42741521 in words is "forty-two million, seven hundred forty-one thousand, five hundred twenty-one".