42520101 has 16 divisors (see below), whose sum is σ = 62356224. Its totient is φ = 25608384.

The previous prime is 42520097. The next prime is 42520117. The reversal of 42520101 is 10102524.

It is not a de Polignac number, because 42520101 - 2² = 42520097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42520501) 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 15 ways as a sum of consecutive naturals, for example, 9766 + ... + 13431.

It is an arithmetic number, because the mean of its divisors is an integer number (3897264).

Almost surely, 2^42520101 is an apocalyptic number.

It is an amenable number.

42520101 is a deficient number, since it is larger than the sum of its proper divisors (19836123).

42520101 is a wasteful number, since it uses less digits than its factorization.

42520101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23260.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 42520101 is about 6520.7438992802. The cubic root of 42520101 is about 349.0316115459.

Adding to 42520101 its reverse (10102524), we get a palindrome (52622625).

The spelling of 42520101 in words is "forty-two million, five hundred twenty thousand, one hundred one".