7121428493 has 8 divisors (see below), whose sum is σ = 7200718560. Its totient is φ = 7042310800.

The previous prime is 7121428481. The next prime is 7121428499. The reversal of 7121428493 is 3948241217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7121428493 - 2¹² = 7121424397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7121428493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7121428499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40898 + ... + 126156.

It is an arithmetic number, because the mean of its divisors is an integer number (900089820).

Almost surely, 2^7121428493 is an apocalyptic number.

It is an amenable number.

7121428493 is a deficient number, since it is larger than the sum of its proper divisors (79290067).

7121428493 is a wasteful number, since it uses less digits than its factorization.

7121428493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86187.

The product of its digits is 96768, while the sum is 41.

The square root of 7121428493 is about 84388.5566472137. The cubic root of 7121428493 is about 1923.9289926329.

The spelling of 7121428493 in words is "seven billion, one hundred twenty-one million, four hundred twenty-eight thousand, four hundred ninety-three".