102051420 has 48 divisors (see below), whose sum is σ = 287353248. Its totient is φ = 27060480.

The previous prime is 102051407. The next prime is 102051431. The reversal of 102051420 is 24150201.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 102051420.

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, 6162 + ... + 15558.

It is an arithmetic number, because the mean of its divisors is an integer number (5986526).

Almost surely, 2^102051420 is an apocalyptic number.

102051420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102051420 is an abundant number, since it is smaller than the sum of its proper divisors (185301828).

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

102051420 is a wasteful number, since it uses less digits than its factorization.

102051420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9590 (or 9588 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 102051420 is about 10102.0502869467. The cubic root of 102051420 is about 467.3113730914.

The spelling of 102051420 in words is "one hundred two million, fifty-one thousand, four hundred twenty".