42521301 has 16 divisors (see below), whose sum is σ = 66700800. Its totient is φ = 26679744.

The previous prime is 42521299. The next prime is 42521329. The reversal of 42521301 is 10312524.

It is not a de Polignac number, because 42521301 - 2¹ = 42521299 is a prime.

It is a super-2 number, since 2×42521301² = 3616122077465202, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42521341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45861 + ... + 46778.

It is an arithmetic number, because the mean of its divisors is an integer number (4168800).

Almost surely, 2^42521301 is an apocalyptic number.

It is an amenable number.

42521301 is a deficient number, since it is larger than the sum of its proper divisors (24179499).

42521301 is a wasteful number, since it uses less digits than its factorization.

42521301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92665 (or 92659 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 42521301 is about 6520.8359126725. The cubic root of 42521301 is about 349.0348949655.

Adding to 42521301 its reverse (10312524), we get a palindrome (52833825).

The spelling of 42521301 in words is "forty-two million, five hundred twenty-one thousand, three hundred one".