102342780 has 72 divisors (see below), whose sum is σ = 320471424. Its totient is φ = 26409600.

The previous prime is 102342763. The next prime is 102342809. The reversal of 102342780 is 87243201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3591 + ... + 14750.

It is an arithmetic number, because the mean of its divisors is an integer number (4450992).

Almost surely, 2^102342780 is an apocalyptic number.

102342780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102342780 is an abundant number, since it is smaller than the sum of its proper divisors (218128644).

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

102342780 is a wasteful number, since it uses less digits than its factorization.

102342780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18387 (or 18382 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 102342780 is about 10116.4608435955. The cubic root of 102342780 is about 467.7556800574.

Adding to 102342780 its reverse (87243201), we get a palindrome (189585981).

The spelling of 102342780 in words is "one hundred two million, three hundred forty-two thousand, seven hundred eighty".