102145620 has 48 divisors (see below), whose sum is σ = 295239168. Its totient is φ = 26359680.

The previous prime is 102145583. The next prime is 102145633. The reversal of 102145620 is 26541201.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 25599 + ... + 29318.

It is an arithmetic number, because the mean of its divisors is an integer number (6150816).

Almost surely, 2^102145620 is an apocalyptic number.

102145620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102145620 is an abundant number, since it is smaller than the sum of its proper divisors (193093548).

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

102145620 is a wasteful number, since it uses less digits than its factorization.

102145620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54960 (or 54958 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 102145620 is about 10106.7116313863. The cubic root of 102145620 is about 467.4551149868.

Adding to 102145620 its reverse (26541201), we get a palindrome (128686821).

The spelling of 102145620 in words is "one hundred two million, one hundred forty-five thousand, six hundred twenty".