102545133420 has 24 divisors (see below), whose sum is σ = 287126373744. Its totient is φ = 27345368896.

The previous prime is 102545133419. The next prime is 102545133433. The reversal of 102545133420 is 24331545201.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 854542719 + ... + 854542838.

It is an arithmetic number, because the mean of its divisors is an integer number (11963598906).

Almost surely, 2^102545133420 is an apocalyptic number.

102545133420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102545133420 is an abundant number, since it is smaller than the sum of its proper divisors (184581240324).

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

102545133420 is a wasteful number, since it uses less digits than its factorization.

102545133420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709085569 (or 1709085567 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 102545133420 its reverse (24331545201), we get a palindrome (126876678621).

The spelling of 102545133420 in words is "one hundred two billion, five hundred forty-five million, one hundred thirty-three thousand, four hundred twenty".