102040447 has 2 divisors, whose sum is σ = 102040448. Its totient is φ = 102040446.

The previous prime is 102040403. The next prime is 102040483. The reversal of 102040447 is 744040201.

It is a strong prime.

It is an emirp because it is prime and its reverse (744040201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102040447 - 2⁷ = 102040319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102020447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51020223 + 51020224.

It is an arithmetic number, because the mean of its divisors is an integer number (51020224).

Almost surely, 2^102040447 is an apocalyptic number.

102040447 is a deficient number, since it is larger than the sum of its proper divisors (1).

102040447 is an equidigital number, since it uses as much as digits as its factorization.

102040447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 102040447 is about 10101.5071647750. The cubic root of 102040447 is about 467.2946233931.

Adding to 102040447 its reverse (744040201), we get a palindrome (846080648).

The spelling of 102040447 in words is "one hundred two million, forty thousand, four hundred forty-seven".