2420452144021 has 4 divisors (see below), whose sum is σ = 2420604380044. Its totient is φ = 2420299908000.

The previous prime is 2420452144007. The next prime is 2420452144031. The reversal of 2420452144021 is 1204412540242.

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 1272316320900 + 1148135823121 = 1127970^2 + 1071511^2 .

It is a cyclic number.

It is not a de Polignac number, because 2420452144021 - 2²⁹ = 2419915273109 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 (2420452144031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76094160 + ... + 76125961.

It is an arithmetic number, because the mean of its divisors is an integer number (605151095011).

Almost surely, 2^{2420452144021} is an apocalyptic number.

It is an amenable number.

2420452144021 is a deficient number, since it is larger than the sum of its proper divisors (152236023).

2420452144021 is a wasteful number, since it uses less digits than its factorization.

2420452144021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152236022.

The product of its (nonzero) digits is 20480, while the sum is 31.

Adding to 2420452144021 its reverse (1204412540242), we get a palindrome (3624864684263).

The spelling of 2420452144021 in words is "two trillion, four hundred twenty billion, four hundred fifty-two million, one hundred forty-four thousand, twenty-one".