102355420 has 24 divisors (see below), whose sum is σ = 217078848. Its totient is φ = 40536000.

The previous prime is 102355403. The next prime is 102355423. The reversal of 102355420 is 24553201.

It is a junction number, because it is equal to n+sod(n) for n = 102355391 and 102355400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102355423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23316 + ... + 27355.

It is an arithmetic number, because the mean of its divisors is an integer number (9044952).

Almost surely, 2^102355420 is an apocalyptic number.

102355420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102355420 is an abundant number, since it is smaller than the sum of its proper divisors (114723428).

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

102355420 is a wasteful number, since it uses less digits than its factorization.

102355420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50781 (or 50779 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 102355420 is about 10117.0855487141. The cubic root of 102355420 is about 467.7749362225.

The spelling of 102355420 in words is "one hundred two million, three hundred fifty-five thousand, four hundred twenty".