102601421 has 6 divisors (see below), whose sum is σ = 111101130. Its totient is φ = 94708848.

The previous prime is 102601417. The next prime is 102601469. The reversal of 102601421 is 124106201.

It can be written as a sum of positive squares in 3 ways, for example, as 3200521 + 99400900 = 1789^2 + 9970^2 .

It is not a de Polignac number, because 102601421 - 2² = 102601417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102601421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102601021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 303386 + ... + 303723.

It is an arithmetic number, because the mean of its divisors is an integer number (18516855).

Almost surely, 2^102601421 is an apocalyptic number.

It is an amenable number.

102601421 is a deficient number, since it is larger than the sum of its proper divisors (8499709).

102601421 is an equidigital number, since it uses as much as digits as its factorization.

102601421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607135 (or 607122 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 102601421 is about 10129.2359534172. The cubic root of 102601421 is about 468.1493864669.

Adding to 102601421 its reverse (124106201), we get a palindrome (226707622).

The spelling of 102601421 in words is "one hundred two million, six hundred one thousand, four hundred twenty-one".