42200521 has 16 divisors (see below), whose sum is σ = 47573568. Its totient is φ = 37100800.

The previous prime is 42200519. The next prime is 42200533. The reversal of 42200521 is 12500224.

It is not a de Polignac number, because 42200521 - 2¹ = 42200519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42200495 and 42200504.

It is not an unprimeable number, because it can be changed into a prime (42200551) 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, 61446 + ... + 62128.

It is an arithmetic number, because the mean of its divisors is an integer number (2973348).

Almost surely, 2^42200521 is an apocalyptic number.

42200521 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

42200521 is a deficient number, since it is larger than the sum of its proper divisors (5373047).

42200521 is a wasteful number, since it uses less digits than its factorization.

42200521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 42200521 is about 6496.1928080992. The cubic root of 42200521 is about 348.1549740239.

Adding to 42200521 its reverse (12500224), we get a palindrome (54700745).

The spelling of 42200521 in words is "forty-two million, two hundred thousand, five hundred twenty-one".