102601643 has 4 divisors (see below), whose sum is σ = 107062608. Its totient is φ = 98140680.

The previous prime is 102601637. The next prime is 102601651. The reversal of 102601643 is 346106201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346106201 = 7 ⋅49443743.

It is a cyclic number.

It is not a de Polignac number, because 102601643 - 2¹⁸ = 102339499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 4460941 = 102601643 / (1 + 0 + 2 + 6 + 0 + 1 + 6 + 4 + 3).

It is not an unprimeable number, because it can be changed into a prime (102601663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2230448 + ... + 2230493.

It is an arithmetic number, because the mean of its divisors is an integer number (26765652).

Almost surely, 2^102601643 is an apocalyptic number.

102601643 is a deficient number, since it is larger than the sum of its proper divisors (4460965).

102601643 is an equidigital number, since it uses as much as digits as its factorization.

102601643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4460964.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 102601643 is about 10129.2469117896. The cubic root of 102601643 is about 468.1497241136.

Adding to 102601643 its reverse (346106201), we get a palindrome (448707844).

The spelling of 102601643 in words is "one hundred two million, six hundred one thousand, six hundred forty-three".