102132240 has 80 divisors (see below), whose sum is σ = 361845888. Its totient is φ = 23344128.

The previous prime is 102132223. The next prime is 102132241. The reversal of 102132240 is 42231201.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (102132241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28717 + ... + 32076.

Almost surely, 2^102132240 is an apocalyptic number.

102132240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102132240 is an abundant number, since it is smaller than the sum of its proper divisors (259713648).

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

102132240 is a wasteful number, since it uses less digits than its factorization.

102132240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60816 (or 60810 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 102132240 is about 10106.0496733392. The cubic root of 102132240 is about 467.4347035306.

Adding to 102132240 its reverse (42231201), we get a palindrome (144363441).

The spelling of 102132240 in words is "one hundred two million, one hundred thirty-two thousand, two hundred forty".