102011421040 has 160 divisors (see below), whose sum is σ = 256911056640. Its totient is φ = 37542758400.

The previous prime is 102011420963. The next prime is 102011421067. The reversal of 102011421040 is 40124110201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14143035 + ... + 14150245.

It is an arithmetic number, because the mean of its divisors is an integer number (1605694104).

Almost surely, 2^102011421040 is an apocalyptic number.

102011421040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102011421040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128455528320).

102011421040 is an abundant number, since it is smaller than the sum of its proper divisors (154899635600).

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

102011421040 is a wasteful number, since it uses less digits than its factorization.

102011421040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7511 (or 7505 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102011421040 its reverse (40124110201), we get a palindrome (142135531241).

The spelling of 102011421040 in words is "one hundred two billion, eleven million, four hundred twenty-one thousand, forty".