860342121 has 16 divisors (see below), whose sum is σ = 1278614400. Its totient is φ = 571746384.

The previous prime is 860342113. The next prime is 860342129. The reversal of 860342121 is 121243068.

860342121 is a `hidden beast` number, since 8 + 603 + 42 + 12 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (860342113) and next prime (860342129).

It is not a de Polignac number, because 860342121 - 2³ = 860342113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (860342129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41701 + ... + 58818.

It is an arithmetic number, because the mean of its divisors is an integer number (79913400).

Almost surely, 2^860342121 is an apocalyptic number.

It is an amenable number.

860342121 is a deficient number, since it is larger than the sum of its proper divisors (418272279).

860342121 is a wasteful number, since it uses less digits than its factorization.

860342121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100845 (or 100839 counting only the distinct ones).

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

The square root of 860342121 is about 29331.5891318558. The cubic root of 860342121 is about 951.0946278079.

Adding to 860342121 its reverse (121243068), we get a palindrome (981585189).

The spelling of 860342121 in words is "eight hundred sixty million, three hundred forty-two thousand, one hundred twenty-one".