7421324665042 has 4 divisors (see below), whose sum is σ = 11131986997566. Its totient is φ = 3710662332520.

The previous prime is 7421324665021. The next prime is 7421324665099. The reversal of 7421324665042 is 2405664231247.

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

It can be written as a sum of positive squares in only one way, i.e., 4295716357321 + 3125608307721 = 2072611^2 + 1767939^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7421324664983 and 7421324665001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1855331166259 + ... + 1855331166262.

Almost surely, 2^{7421324665042} is an apocalyptic number.

7421324665042 is a deficient number, since it is larger than the sum of its proper divisors (3710662332524).

7421324665042 is a wasteful number, since it uses less digits than its factorization.

7421324665042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3710662332523.

The product of its (nonzero) digits is 1935360, while the sum is 46.

Adding to 7421324665042 its reverse (2405664231247), we get a palindrome (9826988896289).

The spelling of 7421324665042 in words is "seven trillion, four hundred twenty-one billion, three hundred twenty-four million, six hundred sixty-five thousand, forty-two".