42645254 has 8 divisors (see below), whose sum is σ = 66173760. Its totient is φ = 20587336.

The previous prime is 42645241. The next prime is 42645257. The reversal of 42645254 is 45254624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 42645254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42645257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367574 + ... + 367689.

It is an arithmetic number, because the mean of its divisors is an integer number (8271720).

Almost surely, 2^42645254 is an apocalyptic number.

42645254 is a deficient number, since it is larger than the sum of its proper divisors (23528506).

42645254 is a wasteful number, since it uses less digits than its factorization.

42645254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735294.

The product of its digits is 38400, while the sum is 32.

The square root of 42645254 is about 6530.3333758699. Note that the first 4 decimals coincide. The cubic root of 42645254 is about 349.3737208402.

Adding to 42645254 its reverse (45254624), we get a palindrome (87899878).

The spelling of 42645254 in words is "forty-two million, six hundred forty-five thousand, two hundred fifty-four".