102146441 has 2 divisors, whose sum is σ = 102146442. Its totient is φ = 102146440.

The previous prime is 102146431. The next prime is 102146459. The reversal of 102146441 is 144641201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101203600 + 942841 = 10060^2 + 971^2 .

It is an emirp because it is prime and its reverse (144641201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102146441 is a prime.

It is not a weakly prime, because it can be changed into another prime (102146431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51073220 + 51073221.

It is an arithmetic number, because the mean of its divisors is an integer number (51073221).

Almost surely, 2^102146441 is an apocalyptic number.

It is an amenable number.

102146441 is a deficient number, since it is larger than the sum of its proper divisors (1).

102146441 is an equidigital number, since it uses as much as digits as its factorization.

102146441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 102146441 is about 10106.7522478786. The cubic root of 102146441 is about 467.4563673806.

Adding to 102146441 its reverse (144641201), we get a palindrome (246787642).

The spelling of 102146441 in words is "one hundred two million, one hundred forty-six thousand, four hundred forty-one".