102972643 has 2 divisors, whose sum is σ = 102972644. Its totient is φ = 102972642.

The previous prime is 102972637. The next prime is 102972673. The reversal of 102972643 is 346279201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102972643 - 2⁹ = 102972131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102972599 and 102972608.

It is not a weakly prime, because it can be changed into another prime (102972673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51486321 + 51486322.

It is an arithmetic number, because the mean of its divisors is an integer number (51486322).

Almost surely, 2^102972643 is an apocalyptic number.

102972643 is a deficient number, since it is larger than the sum of its proper divisors (1).

102972643 is an equidigital number, since it uses as much as digits as its factorization.

102972643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 102972643 is about 10147.5436929338. The cubic root of 102972643 is about 468.7133103609.

The spelling of 102972643 in words is "one hundred two million, nine hundred seventy-two thousand, six hundred forty-three".