2742635421 has 6 divisors (see below), whose sum is σ = 3961584510. Its totient is φ = 1828423608.

The previous prime is 2742635411. The next prime is 2742635429. The reversal of 2742635421 is 1245362472.

It can be written as a sum of positive squares in only one way, i.e., 1389425625 + 1353209796 = 37275^2 + 36786^2 .

It is not a de Polignac number, because 2742635421 - 2¹¹ = 2742633373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2742635429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 152368626 + ... + 152368643.

It is an arithmetic number, because the mean of its divisors is an integer number (660264085).

Almost surely, 2^2742635421 is an apocalyptic number.

It is an amenable number.

2742635421 is a deficient number, since it is larger than the sum of its proper divisors (1218949089).

2742635421 is a wasteful number, since it uses less digits than its factorization.

2742635421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304737275 (or 304737272 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 2742635421 is about 52370.1768280383. The cubic root of 2742635421 is about 1399.7678902615.

Adding to 2742635421 its reverse (1245362472), we get a palindrome (3987997893).

The spelling of 2742635421 in words is "two billion, seven hundred forty-two million, six hundred thirty-five thousand, four hundred twenty-one".