42601521 has 8 divisors (see below), whose sum is σ = 57353920. Its totient is φ = 28125072.

The previous prime is 42601513. The next prime is 42601523. The reversal of 42601521 is 12510624.

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

It is not a de Polignac number, because 42601521 - 2³ = 42601513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42601523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68626 + ... + 69243.

It is an arithmetic number, because the mean of its divisors is an integer number (7169240).

Almost surely, 2^42601521 is an apocalyptic number.

It is an amenable number.

42601521 is a deficient number, since it is larger than the sum of its proper divisors (14752399).

42601521 is a wasteful number, since it uses less digits than its factorization.

42601521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137975.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 42601521 is about 6526.9840661672. The cubic root of 42601521 is about 349.2542516110.

The spelling of 42601521 in words is "forty-two million, six hundred one thousand, five hundred twenty-one".