102343540 has 24 divisors (see below), whose sum is σ = 231454440. Its totient is φ = 37788288.

The previous prime is 102343531. The next prime is 102343541. The reversal of 102343540 is 45343201.

It can be written as a sum of positive squares in 4 ways, for example, as 2862864 + 99480676 = 1692^2 + 9974^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102343541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196555 + ... + 197074.

It is an arithmetic number, because the mean of its divisors is an integer number (9643935).

Almost surely, 2^102343540 is an apocalyptic number.

102343540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102343540 is an abundant number, since it is smaller than the sum of its proper divisors (129110900).

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

102343540 is a wasteful number, since it uses less digits than its factorization.

102343540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393651 (or 393649 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 102343540 is about 10116.4984060692. The cubic root of 102343540 is about 467.7568379096.

Adding to 102343540 its reverse (45343201), we get a palindrome (147686741).

The spelling of 102343540 in words is "one hundred two million, three hundred forty-three thousand, five hundred forty".