42453245 has 32 divisors (see below), whose sum is σ = 55732320. Its totient is φ = 30965760.

The previous prime is 42453227. The next prime is 42453247. The reversal of 42453245 is 54235424.

It can be written as a sum of positive squares in 16 ways, for example, as 15194404 + 27258841 = 3898^2 + 5221^2 .

It is not a de Polignac number, because 42453245 - 2⁶ = 42453181 is a prime.

It is a super-2 number, since 2×42453245² = 3604556022060050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42453247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219869 + ... + 220061.

It is an arithmetic number, because the mean of its divisors is an integer number (1741635).

Almost surely, 2^42453245 is an apocalyptic number.

It is an amenable number.

42453245 is a deficient number, since it is larger than the sum of its proper divisors (13279075).

42453245 is a wasteful number, since it uses less digits than its factorization.

42453245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305.

The product of its digits is 19200, while the sum is 29.

The square root of 42453245 is about 6515.6154736141. The cubic root of 42453245 is about 348.8485836159.

Adding to 42453245 its reverse (54235424), we get a palindrome (96688669).

The spelling of 42453245 in words is "forty-two million, four hundred fifty-three thousand, two hundred forty-five".