102421116 has 144 divisors (see below), whose sum is σ = 317011968. Its totient is φ = 27244800.

The previous prime is 102421079. The next prime is 102421133. The reversal of 102421116 is 611124201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 237421 + ... + 237851.

It is an arithmetic number, because the mean of its divisors is an integer number (2201472).

Almost surely, 2^102421116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102421116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158505984).

102421116 is an abundant number, since it is smaller than the sum of its proper divisors (214590852).

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

102421116 is a wasteful number, since it uses less digits than its factorization.

102421116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512 (or 507 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 102421116 is about 10120.3318127421. The cubic root of 102421116 is about 467.8749940073.

Adding to 102421116 its reverse (611124201), we get a palindrome (713545317).

The spelling of 102421116 in words is "one hundred two million, four hundred twenty-one thousand, one hundred sixteen".