7421225642 has 16 divisors (see below), whose sum is σ = 11436907272. Its totient is φ = 3608997120.

The previous prime is 7421225633. The next prime is 7421225653. The reversal of 7421225642 is 2465221247.

It can be written as a sum of positive squares in 4 ways, for example, as 6868928641 + 552297001 = 82879^2 + 23501^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201542 + ... + 235502.

Almost surely, 2^7421225642 is an apocalyptic number.

7421225642 is a deficient number, since it is larger than the sum of its proper divisors (4015681630).

7421225642 is a wasteful number, since it uses less digits than its factorization.

7421225642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36953.

The product of its digits is 53760, while the sum is 35.

The square root of 7421225642 is about 86146.5358676714. The cubic root of 7421225642 is about 1950.5565487452.

Adding to 7421225642 its reverse (2465221247), we get a palindrome (9886446889).

The spelling of 7421225642 in words is "seven billion, four hundred twenty-one million, two hundred twenty-five thousand, six hundred forty-two".