7144027421 has 4 divisors (see below), whose sum is σ = 7144651932. Its totient is φ = 7143402912.

The previous prime is 7144027403. The next prime is 7144027441. The reversal of 7144027421 is 1247204417.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6144835321 + 999192100 = 78389^2 + 31610^2 .

It is a cyclic number.

It is not a de Polignac number, because 7144027421 - 2¹⁰ = 7144026397 is a prime.

It is a super-2 number, since 2×7144027421² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7144027441) 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, 294770 + ... + 318083.

It is an arithmetic number, because the mean of its divisors is an integer number (1786162983).

Almost surely, 2^7144027421 is an apocalyptic number.

It is an amenable number.

7144027421 is a deficient number, since it is larger than the sum of its proper divisors (624511).

7144027421 is a wasteful number, since it uses less digits than its factorization.

7144027421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624510.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 7144027421 is about 84522.3486481534. The cubic root of 7144027421 is about 1925.9619565888.

The spelling of 7144027421 in words is "seven billion, one hundred forty-four million, twenty-seven thousand, four hundred twenty-one".