42251245 has 8 divisors (see below), whose sum is σ = 50736384. Its totient is φ = 33777744.

The previous prime is 42251227. The next prime is 42251267. The reversal of 42251245 is 54215224.

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

It is a cyclic number.

It is not a de Polignac number, because 42251245 - 2¹⁹ = 41726957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12972 + ... + 15898.

It is an arithmetic number, because the mean of its divisors is an integer number (6342048).

Almost surely, 2^42251245 is an apocalyptic number.

It is an amenable number.

42251245 is a deficient number, since it is larger than the sum of its proper divisors (8485139).

42251245 is a wasteful number, since it uses less digits than its factorization.

42251245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5819.

The product of its digits is 3200, while the sum is 25.

The square root of 42251245 is about 6500.0957685253. The cubic root of 42251245 is about 348.2944094436.

Adding to 42251245 its reverse (54215224), we get a palindrome (96466469).

The spelling of 42251245 in words is "forty-two million, two hundred fifty-one thousand, two hundred forty-five".