6342642445 has 8 divisors (see below), whose sum is σ = 7735944600. Its totient is φ = 4990931520.

The previous prime is 6342642443. The next prime is 6342642463. The reversal of 6342642445 is 5442462436.

It can be written as a sum of positive squares in 4 ways, for example, as 806389609 + 5536252836 = 28397^2 + 74406^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6342642445 - 2¹ = 6342642443 is a prime.

It is a super-2 number, since 2×6342642445² = 80458226370231156050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6342642398 and 6342642407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6342642443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10397470 + ... + 10398079.

It is an arithmetic number, because the mean of its divisors is an integer number (966993075).

Almost surely, 2^6342642445 is an apocalyptic number.

It is an amenable number.

6342642445 is a deficient number, since it is larger than the sum of its proper divisors (1393302155).

6342642445 is a wasteful number, since it uses less digits than its factorization.

6342642445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20795615.

The product of its digits is 552960, while the sum is 40.

The square root of 6342642445 is about 79640.7084662109. The cubic root of 6342642445 is about 1851.0724188761.

Subtracting from 6342642445 its reverse (5442462436), we obtain a square (900180009 = 30003²).

The spelling of 6342642445 in words is "six billion, three hundred forty-two million, six hundred forty-two thousand, four hundred forty-five".