102643422 has 32 divisors (see below), whose sum is σ = 237924864. Its totient is φ = 28912800.

The previous prime is 102643417. The next prime is 102643423. The reversal of 102643422 is 224346201.

It is a junction number, because it is equal to n+sod(n) for n = 102643392 and 102643401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102643423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14229 + ... + 20192.

It is an arithmetic number, because the mean of its divisors is an integer number (7435152).

Almost surely, 2^102643422 is an apocalyptic number.

102643422 is an abundant number, since it is smaller than the sum of its proper divisors (135281442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102643422 is a wasteful number, since it uses less digits than its factorization.

102643422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34504.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 102643422 is about 10131.3089973606. The cubic root of 102643422 is about 468.2132584216.

Adding to 102643422 its reverse (224346201), we get a palindrome (326989623).

The spelling of 102643422 in words is "one hundred two million, six hundred forty-three thousand, four hundred twenty-two".