102345240 has 64 divisors (see below), whose sum is σ = 307812960. Its totient is φ = 27223040.

The previous prime is 102345209. The next prime is 102345281. The reversal of 102345240 is 42543201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61702 + ... + 63338.

Almost surely, 2^102345240 is an apocalyptic number.

102345240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102345240 is an abundant number, since it is smaller than the sum of its proper divisors (205467720).

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

102345240 is a wasteful number, since it uses less digits than its factorization.

102345240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172 (or 2168 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 102345240 is about 10116.5824268871. The cubic root of 102345240 is about 467.7594278214.

Adding to 102345240 its reverse (42543201), we get a palindrome (144888441).

The spelling of 102345240 in words is "one hundred two million, three hundred forty-five thousand, two hundred forty".