42453345 has 16 divisors (see below), whose sum is σ = 74100672. Its totient is φ = 20583360.

The previous prime is 42453337. The next prime is 42453349. The reversal of 42453345 is 54335424.

It is not a de Polignac number, because 42453345 - 2³ = 42453337 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42453349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128482 + ... + 128811.

It is an arithmetic number, because the mean of its divisors is an integer number (4631292).

Almost surely, 2^42453345 is an apocalyptic number.

It is an amenable number.

42453345 is a deficient number, since it is larger than the sum of its proper divisors (31647327).

42453345 is a wasteful number, since it uses less digits than its factorization.

42453345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257312.

The product of its digits is 28800, while the sum is 30.

The square root of 42453345 is about 6515.6231474818. The cubic root of 42453345 is about 348.8488575237.

Adding to 42453345 its reverse (54335424), we get a palindrome (96788769).

The spelling of 42453345 in words is "forty-two million, four hundred fifty-three thousand, three hundred forty-five".