102020147 has 2 divisors, whose sum is σ = 102020148. Its totient is φ = 102020146.

The previous prime is 102020143. The next prime is 102020153. The reversal of 102020147 is 741020201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102020147 - 2² = 102020143 is a prime.

It is a super-2 number, since 2×102020147² = 20816220787803218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102020143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010073 + 51010074.

It is an arithmetic number, because the mean of its divisors is an integer number (51010074).

Almost surely, 2^102020147 is an apocalyptic number.

102020147 is a deficient number, since it is larger than the sum of its proper divisors (1).

102020147 is an equidigital number, since it uses as much as digits as its factorization.

102020147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 102020147 is about 10100.5023142416. The cubic root of 102020147 is about 467.2636333616.

Adding to 102020147 its reverse (741020201), we get a palindrome (843040348).

The spelling of 102020147 in words is "one hundred two million, twenty thousand, one hundred forty-seven".