104642251 has 8 divisors (see below), whose sum is σ = 120326144. Its totient is φ = 89142120.

The previous prime is 104642243. The next prime is 104642269. The reversal of 104642251 is 152246401.

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 104642251 - 2³ = 104642243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104642231) 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, 44715 + ... + 46996.

It is an arithmetic number, because the mean of its divisors is an integer number (15040768).

Almost surely, 2^104642251 is an apocalyptic number.

104642251 is a deficient number, since it is larger than the sum of its proper divisors (15683893).

104642251 is an equidigital number, since it uses as much as digits as its factorization.

104642251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91881.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 104642251 is about 10229.4795077756. The cubic root of 104642251 is about 471.2329946231.

Adding to 104642251 its reverse (152246401), we get a palindrome (256888652).

The spelling of 104642251 in words is "one hundred four million, six hundred forty-two thousand, two hundred fifty-one".