102242140 has 96 divisors (see below), whose sum is σ = 288336384. Its totient is φ = 29410560.

The previous prime is 102242099. The next prime is 102242143. The reversal of 102242140 is 41242201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102242143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17467 + ... + 22573.

It is an arithmetic number, because the mean of its divisors is an integer number (3003504).

Almost surely, 2^102242140 is an apocalyptic number.

102242140 is a gapful number since it is divisible by the number (10) 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 102242140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144168192).

102242140 is an abundant number, since it is smaller than the sum of its proper divisors (186094244).

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

102242140 is a wasteful number, since it uses less digits than its factorization.

102242140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5147 (or 5145 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 102242140 is about 10111.4855486224. The cubic root of 102242140 is about 467.6023053864.

Adding to 102242140 its reverse (41242201), we get a palindrome (143484341).

It can be divided in two parts, 102 and 242140, that added together give a palindrome (242242).

The spelling of 102242140 in words is "one hundred two million, two hundred forty-two thousand, one hundred forty".