42500251 has 8 divisors (see below), whose sum is σ = 44424864. Its totient is φ = 40582080.

The previous prime is 42500239. The next prime is 42500273. The reversal of 42500251 is 15200524.

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 42500251 - 2⁵ = 42500219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42500201) 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, 16191 + ... + 18631.

It is an arithmetic number, because the mean of its divisors is an integer number (5553108).

Almost surely, 2^42500251 is an apocalyptic number.

42500251 is a deficient number, since it is larger than the sum of its proper divisors (1924613).

42500251 is a wasteful number, since it uses less digits than its factorization.

42500251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 42500251 is about 6519.2216559954. The cubic root of 42500251 is about 348.9772893490.

Adding to 42500251 its reverse (15200524), we get a palindrome (57700775).

The spelling of 42500251 in words is "forty-two million, five hundred thousand, two hundred fifty-one".