102403247 has 2 divisors, whose sum is σ = 102403248. Its totient is φ = 102403246.

The previous prime is 102403241. The next prime is 102403277. The reversal of 102403247 is 742304201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102403247 - 2⁶ = 102403183 is a prime.

It is a super-2 number, since 2×102403247² = 20972849992286018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102403241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51201623 + 51201624.

It is an arithmetic number, because the mean of its divisors is an integer number (51201624).

Almost surely, 2^102403247 is an apocalyptic number.

102403247 is a deficient number, since it is larger than the sum of its proper divisors (1).

102403247 is an equidigital number, since it uses as much as digits as its factorization.

102403247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 102403247 is about 10119.4489474477. The cubic root of 102403247 is about 467.8477830022.

Adding to 102403247 its reverse (742304201), we get a palindrome (844707448).

The spelling of 102403247 in words is "one hundred two million, four hundred three thousand, two hundred forty-seven".