7481123021 has 8 divisors (see below), whose sum is σ = 7634073888. Its totient is φ = 7329150000.

The previous prime is 7481122897. The next prime is 7481123033. The reversal of 7481123021 is 1203211847.

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

It is not a de Polignac number, because 7481123021 - 2¹⁴ = 7481106637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7481125021) by changing a digit.

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, 228995 + ... + 259616.

It is an arithmetic number, because the mean of its divisors is an integer number (954259236).

Almost surely, 2^7481123021 is an apocalyptic number.

It is an amenable number.

7481123021 is a deficient number, since it is larger than the sum of its proper divisors (152950867).

7481123021 is a wasteful number, since it uses less digits than its factorization.

7481123021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488923.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 7481123021 is about 86493.4854252041. The cubic root of 7481123021 is about 1955.7901992019.

Adding to 7481123021 its reverse (1203211847), we get a palindrome (8684334868).

The spelling of 7481123021 in words is "seven billion, four hundred eighty-one million, one hundred twenty-three thousand, twenty-one".