2742407621 has 4 divisors (see below), whose sum is σ = 2743010592. Its totient is φ = 2741804652.

The previous prime is 2742407537. The next prime is 2742407663. The reversal of 2742407621 is 1267042472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2742407621 - 2²⁶ = 2675298757 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 (2742400621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294611 + ... + 303776.

It is an arithmetic number, because the mean of its divisors is an integer number (685752648).

Almost surely, 2^2742407621 is an apocalyptic number.

It is an amenable number.

2742407621 is a deficient number, since it is larger than the sum of its proper divisors (602971).

2742407621 is an equidigital number, since it uses as much as digits as its factorization.

2742407621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602970.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 2742407621 is about 52368.0018809196. The cubic root of 2742407621 is about 1399.7291348426.

The spelling of 2742407621 in words is "two billion, seven hundred forty-two million, four hundred seven thousand, six hundred twenty-one".