102040340 has 48 divisors (see below), whose sum is σ = 218115072. Its totient is φ = 40094976.

The previous prime is 102040321. The next prime is 102040343. The reversal of 102040340 is 43040201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102040343) 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, 457469 + ... + 457691.

It is an arithmetic number, because the mean of its divisors is an integer number (4544064).

Almost surely, 2^102040340 is an apocalyptic number.

102040340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102040340 is an abundant number, since it is smaller than the sum of its proper divisors (116074732).

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

102040340 is a wasteful number, since it uses less digits than its factorization.

102040340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 534 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 102040340 is about 10101.5018685342. The cubic root of 102040340 is about 467.2944600574.

Adding to 102040340 its reverse (43040201), we get a palindrome (145080541).

The spelling of 102040340 in words is "one hundred two million, forty thousand, three hundred forty".