863242101 has 24 divisors (see below), whose sum is σ = 1296661080. Its totient is φ = 552738816.

The previous prime is 863242097. The next prime is 863242109. The reversal of 863242101 is 101242368.

863242101 is a `hidden beast` number, since 8 + 632 + 4 + 21 + 0 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6275025 + 856967076 = 2505^2 + 29274^2 .

It is not a de Polignac number, because 863242101 - 2² = 863242097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863242109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41805 + ... + 58941.

It is an arithmetic number, because the mean of its divisors is an integer number (54027545).

Almost surely, 2^863242101 is an apocalyptic number.

It is an amenable number.

863242101 is a deficient number, since it is larger than the sum of its proper divisors (433418979).

863242101 is a wasteful number, since it uses less digits than its factorization.

863242101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17365 (or 17362 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 863242101 is about 29380.9819611258. The cubic root of 863242101 is about 952.1620567309.

Adding to 863242101 its reverse (101242368), we get a palindrome (964484469).

The spelling of 863242101 in words is "eight hundred sixty-three million, two hundred forty-two thousand, one hundred one".