2421000040343 has 16 divisors (see below), whose sum is σ = 2566607523840. Its totient is φ = 2275749168000.

The previous prime is 2421000040321. The next prime is 2421000040367. The reversal of 2421000040343 is 3430400001242.

It is a cyclic number.

It is not a de Polignac number, because 2421000040343 - 2¹⁸ = 2420999778199 is a prime.

It is a super-2 number, since 2×2421000040343² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421000040313) 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, 55137428 + ... + 55181318.

It is an arithmetic number, because the mean of its divisors is an integer number (160412970240).

Almost surely, 2^{2421000040343} is an apocalyptic number.

2421000040343 is a deficient number, since it is larger than the sum of its proper divisors (145607483497).

2421000040343 is a wasteful number, since it uses less digits than its factorization.

2421000040343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47878.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 2421000040343 its reverse (3430400001242), we get a palindrome (5851400041585).

The spelling of 2421000040343 in words is "two trillion, four hundred twenty-one billion, forty thousand, three hundred forty-three".