6042447721 has 4 divisors (see below), whose sum is σ = 6051426772. Its totient is φ = 6033468672.

The previous prime is 6042447707. The next prime is 6042447731. The reversal of 6042447721 is 1277442406.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1277442406 = 2 ⋅638721203.

It can be written as a sum of positive squares in 2 ways, for example, as 4129347600 + 1913100121 = 64260^2 + 43739^2 .

It is a cyclic number.

It is not a de Polignac number, because 6042447721 - 2²⁷ = 5908229993 is a prime.

It is a super-2 number, since 2×6042447721² = 73022348922036187682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6042447731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4488516 + ... + 4489861.

It is an arithmetic number, because the mean of its divisors is an integer number (1512856693).

Almost surely, 2^6042447721 is an apocalyptic number.

It is an amenable number.

6042447721 is a deficient number, since it is larger than the sum of its proper divisors (8979051).

6042447721 is an equidigital number, since it uses as much as digits as its factorization.

6042447721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8979050.

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 6042447721 is about 77733.1828822158. The cubic root of 6042447721 is about 1821.3956730999.

The spelling of 6042447721 in words is "six billion, forty-two million, four hundred forty-seven thousand, seven hundred twenty-one".