2102401023240 has 128 divisors (see below), whose sum is σ = 7254144840960. Its totient is φ = 477487954944.

The previous prime is 2102401023179. The next prime is 2102401023251. The reversal of 2102401023240 is 423201042012.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 7839007 + ... + 8102766.

It is an arithmetic number, because the mean of its divisors is an integer number (56673006570).

Almost surely, 2^{2102401023240} is an apocalyptic number.

2102401023240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102401023240 is an abundant number, since it is smaller than the sum of its proper divisors (5151743817720).

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

2102401023240 is a wasteful number, since it uses less digits than its factorization.

2102401023240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15941951 (or 15941947 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 2102401023240 its reverse (423201042012), we get a palindrome (2525602065252).

The spelling of 2102401023240 in words is "two trillion, one hundred two billion, four hundred one million, twenty-three thousand, two hundred forty".