42531433 has 16 divisors (see below), whose sum is σ = 51649920. Its totient is φ = 34189056.

The previous prime is 42531431. The next prime is 42531451. The reversal of 42531433 is 33413524.

42531433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 42531433 - 2¹ = 42531431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42531398 and 42531407.

It is not an unprimeable number, because it can be changed into a prime (42531431) 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 15 ways as a sum of consecutive naturals, for example, 49435 + ... + 50287.

It is an arithmetic number, because the mean of its divisors is an integer number (3228120).

Almost surely, 2^42531433 is an apocalyptic number.

It is an amenable number.

42531433 is a deficient number, since it is larger than the sum of its proper divisors (9118487).

42531433 is a wasteful number, since it uses less digits than its factorization.

42531433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296.

The product of its digits is 4320, while the sum is 25.

The square root of 42531433 is about 6521.6127606597. The cubic root of 42531433 is about 349.0626155088.

Adding to 42531433 its reverse (33413524), we get a palindrome (75944957).

It can be divided in two parts, 425 and 31433, that multiplied together give a square (13359025 = 3655²).

The spelling of 42531433 in words is "forty-two million, five hundred thirty-one thousand, four hundred thirty-three".