7421147442 has 48 divisors (see below), whose sum is σ = 16359060120. Its totient is φ = 2430902016.

The previous prime is 7421147417. The next prime is 7421147453. The reversal of 7421147442 is 2447411247.

7421147442 is a `hidden beast` number, since 74 + 2 + 1 + 147 + 442 = 666.

7421147442 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6967073961 + 454073481 = 83469^2 + 21309^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7421147397 and 7421147406.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 353784 + ... + 374172.

Almost surely, 2^7421147442 is an apocalyptic number.

7421147442 is an abundant number, since it is smaller than the sum of its proper divisors (8937912678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7421147442 is a wasteful number, since it uses less digits than its factorization.

7421147442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20747 (or 20744 counting only the distinct ones).

The product of its digits is 50176, while the sum is 36.

The square root of 7421147442 is about 86146.0819886778. The cubic root of 7421147442 is about 1950.5496974933.

Adding to 7421147442 its reverse (2447411247), we get a palindrome (9868558689).

The spelling of 7421147442 in words is "seven billion, four hundred twenty-one million, one hundred forty-seven thousand, four hundred forty-two".