7221425042 has 16 divisors (see below), whose sum is σ = 11754433152. Its totient is φ = 3307521360.

The previous prime is 7221425033. The next prime is 7221425047. The reversal of 7221425042 is 2405241227.

It is a junction number, because it is equal to n+sod(n) for n = 7221424996 and 7221425014.

It is not an unprimeable number, because it can be changed into a prime (7221425047) 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, 1056698 + ... + 1063509.

It is an arithmetic number, because the mean of its divisors is an integer number (734652072).

Almost surely, 2^7221425042 is an apocalyptic number.

7221425042 is a deficient number, since it is larger than the sum of its proper divisors (4533008110).

7221425042 is a wasteful number, since it uses less digits than its factorization.

7221425042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120353.

The product of its (nonzero) digits is 8960, while the sum is 29.

The square root of 7221425042 is about 84978.9682333223. The cubic root of 7221425042 is about 1932.8922105418.

Adding to 7221425042 its reverse (2405241227), we get a palindrome (9626666269).

The spelling of 7221425042 in words is "seven billion, two hundred twenty-one million, four hundred twenty-five thousand, forty-two".