2143424220240 has 40 divisors (see below), whose sum is σ = 6644615083488. Its totient is φ = 571579792000.

The previous prime is 2143424220229. The next prime is 2143424220241. The reversal of 2143424220240 is 420224243412.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×2143424220240² (a number of 25 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 2143424220198 and 2143424220207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143424220241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4465466886 + ... + 4465467365.

Almost surely, 2^{2143424220240} is an apocalyptic number.

2143424220240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143424220240 is an abundant number, since it is smaller than the sum of its proper divisors (4501190863248).

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

2143424220240 is a wasteful number, since it uses less digits than its factorization.

2143424220240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8930934267 (or 8930934261 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 2143424220240 its reverse (420224243412), we get a palindrome (2563648463652).

The spelling of 2143424220240 in words is "two trillion, one hundred forty-three billion, four hundred twenty-four million, two hundred twenty thousand, two hundred forty".