7421423136 has 24 divisors (see below), whose sum is σ = 19481235984. Its totient is φ = 2473807680.

The previous prime is 7421423131. The next prime is 7421423197. The reversal of 7421423136 is 6313241247.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 7421423097 and 7421423106.

It is not an unprimeable number, because it can be changed into a prime (7421423131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38653150 + ... + 38653341.

It is an arithmetic number, because the mean of its divisors is an integer number (811718166).

Almost surely, 2^7421423136 is an apocalyptic number.

It is an amenable number.

7421423136 is an abundant number, since it is smaller than the sum of its proper divisors (12059812848).

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

7421423136 is a wasteful number, since it uses less digits than its factorization.

7421423136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77306504 (or 77306496 counting only the distinct ones).

The product of its digits is 24192, while the sum is 33.

The square root of 7421423136 is about 86147.6821278437. The cubic root of 7421423136 is about 1950.5738513587.

The spelling of 7421423136 in words is "seven billion, four hundred twenty-one million, four hundred twenty-three thousand, one hundred thirty-six".