102213140 has 24 divisors (see below), whose sum is σ = 217591080. Its totient is φ = 40324608.

The previous prime is 102213113. The next prime is 102213151. The reversal of 102213140 is 41312201.

It can be written as a sum of positive squares in 4 ways, for example, as 2572816 + 99640324 = 1604^2 + 9982^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33545 + ... + 36464.

It is an arithmetic number, because the mean of its divisors is an integer number (9066295).

Almost surely, 2^102213140 is an apocalyptic number.

102213140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102213140 is an abundant number, since it is smaller than the sum of its proper divisors (115377940).

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

102213140 is a wasteful number, since it uses less digits than its factorization.

102213140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70091 (or 70089 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 102213140 is about 10110.0514340927. The cubic root of 102213140 is about 467.5580909064.

Adding to 102213140 its reverse (41312201), we get a palindrome (143525341).

The spelling of 102213140 in words is "one hundred two million, two hundred thirteen thousand, one hundred forty".