102403420240 has 80 divisors (see below), whose sum is σ = 259800710976. Its totient is φ = 37227801600.

The previous prime is 102403420213. The next prime is 102403420241. The reversal of 102403420240 is 42024304201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102403420241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3894979 + ... + 3921181.

Almost surely, 2^102403420240 is an apocalyptic number.

102403420240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102403420240 is an abundant number, since it is smaller than the sum of its proper divisors (157397290736).

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

102403420240 is a wasteful number, since it uses less digits than its factorization.

102403420240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30668 (or 30662 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 102403420240 its reverse (42024304201), we get a palindrome (144427724441).

The spelling of 102403420240 in words is "one hundred two billion, four hundred three million, four hundred twenty thousand, two hundred forty".