2421343902149 has 4 divisors (see below), whose sum is σ = 2421789253164. Its totient is φ = 2420898551136.

The previous prime is 2421343902137. The next prime is 2421343902151. The reversal of 2421343902149 is 9412093431242.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 990138433249 + 1431205468900 = 995057^2 + 1196330^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421343902149 - 2¹² = 2421343898053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421343902049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222667352 + ... + 222678225.

It is an arithmetic number, because the mean of its divisors is an integer number (605447313291).

Almost surely, 2^{2421343902149} is an apocalyptic number.

It is an amenable number.

2421343902149 is a deficient number, since it is larger than the sum of its proper divisors (445351015).

2421343902149 is an equidigital number, since it uses as much as digits as its factorization.

2421343902149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445351014.

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 2421343902149 in words is "two trillion, four hundred twenty-one billion, three hundred forty-three million, nine hundred two thousand, one hundred forty-nine".