102406212 has 72 divisors (see below), whose sum is σ = 271654656. Its totient is φ = 32465664.

The previous prime is 102406141. The next prime is 102406247. The reversal of 102406212 is 212604201.

102406212 is a `hidden beast` number, since 1 + 0 + 2 + 40 + 621 + 2 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 278853 + ... + 279219.

Almost surely, 2^102406212 is an apocalyptic number.

102406212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102406212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135827328).

102406212 is an abundant number, since it is smaller than the sum of its proper divisors (169248444).

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

102406212 is a wasteful number, since it uses less digits than its factorization.

102406212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737 (or 732 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 102406212 is about 10119.5954464593. The cubic root of 102406212 is about 467.8522983385.

The spelling of 102406212 in words is "one hundred two million, four hundred six thousand, two hundred twelve".