104142251 has 2 divisors, whose sum is σ = 104142252. Its totient is φ = 104142250.

The previous prime is 104142239. The next prime is 104142263. The reversal of 104142251 is 152241401.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (104142239) and next prime (104142263).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104142251 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (104162251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52071125 + 52071126.

It is an arithmetic number, because the mean of its divisors is an integer number (52071126).

Almost surely, 2^104142251 is an apocalyptic number.

104142251 is a deficient number, since it is larger than the sum of its proper divisors (1).

104142251 is an equidigital number, since it uses as much as digits as its factorization.

104142251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 104142251 is about 10205.0110729974. The cubic root of 104142251 is about 470.4812499327.

Adding to 104142251 its reverse (152241401), we get a palindrome (256383652).

The spelling of 104142251 in words is "one hundred four million, one hundred forty-two thousand, two hundred fifty-one".