102620047 has 2 divisors, whose sum is σ = 102620048. Its totient is φ = 102620046.

The previous prime is 102619961. The next prime is 102620069. The reversal of 102620047 is 740026201.

It is an a-pointer prime, because the next prime (102620069) can be obtained adding 102620047 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102620047 - 2⁷ = 102619919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102621047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51310023 + 51310024.

It is an arithmetic number, because the mean of its divisors is an integer number (51310024).

Almost surely, 2^102620047 is an apocalyptic number.

102620047 is a deficient number, since it is larger than the sum of its proper divisors (1).

102620047 is an equidigital number, since it uses as much as digits as its factorization.

102620047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 102620047 is about 10130.1553295100. The cubic root of 102620047 is about 468.1777136342.

Adding to 102620047 its reverse (740026201), we get a palindrome (842646248).

The spelling of 102620047 in words is "one hundred two million, six hundred twenty thousand, forty-seven".