42662251 has 4 divisors (see below), whose sum is σ = 43385400. Its totient is φ = 41939104.

The previous prime is 42662233. The next prime is 42662287. The reversal of 42662251 is 15226624.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42662251 - 2¹⁷ = 42531179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42662051) 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, 361486 + ... + 361603.

It is an arithmetic number, because the mean of its divisors is an integer number (10846350).

Almost surely, 2^42662251 is an apocalyptic number.

42662251 is a deficient number, since it is larger than the sum of its proper divisors (723149).

42662251 is an equidigital number, since it uses as much as digits as its factorization.

42662251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723148.

The product of its digits is 5760, while the sum is 28.

The square root of 42662251 is about 6531.6346346072. The cubic root of 42662251 is about 349.4201309782.

Adding to 42662251 its reverse (15226624), we get a palindrome (57888875).

The spelling of 42662251 in words is "forty-two million, six hundred sixty-two thousand, two hundred fifty-one".