102002440440 has 64 divisors (see below), whose sum is σ = 306038282400. Its totient is φ = 27197898752.

The previous prime is 102002440439. The next prime is 102002440451. The reversal of 102002440440 is 44044200201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1329856 + ... + 1404464.

Almost surely, 2^102002440440 is an apocalyptic number.

102002440440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102002440440 is an abundant number, since it is smaller than the sum of its proper divisors (204035841960).

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

102002440440 is a wasteful number, since it uses less digits than its factorization.

102002440440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86016 (or 86012 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 102002440440 its reverse (44044200201), we get a palindrome (146046640641).

The spelling of 102002440440 in words is "one hundred two billion, two million, four hundred forty thousand, four hundred forty".