42453531 has 8 divisors (see below), whose sum is σ = 62894160. Its totient is φ = 28302336.

The previous prime is 42453529. The next prime is 42453547. The reversal of 42453531 is 13535424.

42453531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42453531 - 2¹ = 42453529 is a prime.

It is a super-2 number, since 2×42453531² = 3604604588735922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1572353 = 42453531 / (4 + 2 + 4 + 5 + 3 + 5 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 42453495 and 42453504.

It is not an unprimeable number, because it can be changed into a prime (42451531) 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, 786150 + ... + 786203.

It is an arithmetic number, because the mean of its divisors is an integer number (7861770).

Almost surely, 2^42453531 is an apocalyptic number.

42453531 is a deficient number, since it is larger than the sum of its proper divisors (20440629).

42453531 is a wasteful number, since it uses less digits than its factorization.

42453531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572362 (or 1572356 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 42453531 is about 6515.6374208515. The cubic root of 42453531 is about 348.8493669912.

Adding to 42453531 its reverse (13535424), we get a palindrome (55988955).

It can be divided in two parts, 4245 and 3531, that added together give a 5-th power (7776 = 6⁵).

The spelling of 42453531 in words is "forty-two million, four hundred fifty-three thousand, five hundred thirty-one".