42250251 has 8 divisors (see below), whose sum is σ = 56764224. Its totient is φ = 27951560.

The previous prime is 42250231. The next prime is 42250277. The reversal of 42250251 is 15205224.

It is a happy number.

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 42250251 - 2¹¹ = 42248203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42250231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53361 + ... + 54146.

It is an arithmetic number, because the mean of its divisors is an integer number (7095528).

Almost surely, 2^42250251 is an apocalyptic number.

42250251 is a deficient number, since it is larger than the sum of its proper divisors (14513973).

42250251 is a wasteful number, since it uses less digits than its factorization.

42250251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107641.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 42250251 is about 6500.0193076636. The cubic root of 42250251 is about 348.2916781051.

Adding to 42250251 its reverse (15205224), we get a palindrome (57455475).

The spelling of 42250251 in words is "forty-two million, two hundred fifty thousand, two hundred fifty-one".