42532121 has 8 divisors (see below), whose sum is σ = 43223040. Its totient is φ = 41846112.

The previous prime is 42532111. The next prime is 42532123. The reversal of 42532121 is 12123524.

42532121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42532121 - 2⁶ = 42532057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42532093 and 42532102.

It is not an unprimeable number, because it can be changed into a prime (42532123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18776 + ... + 20918.

It is an arithmetic number, because the mean of its divisors is an integer number (5402880).

Almost surely, 2^42532121 is an apocalyptic number.

It is an amenable number.

42532121 is a deficient number, since it is larger than the sum of its proper divisors (690919).

42532121 is a wasteful number, since it uses less digits than its factorization.

42532121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455.

The product of its digits is 480, while the sum is 20.

The square root of 42532121 is about 6521.6655081352. The cubic root of 42532121 is about 349.0644976759.

Adding to 42532121 its reverse (12123524), we get a palindrome (54655645).

The spelling of 42532121 in words is "forty-two million, five hundred thirty-two thousand, one hundred twenty-one".