6125243021 has 4 divisors (see below), whose sum is σ = 6485551452. Its totient is φ = 5764934592.

The previous prime is 6125242997. The next prime is 6125243027. The reversal of 6125243021 is 1203425216.

It is a happy number.

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 3432670921 + 2692572100 = 58589^2 + 51890^2 .

It is a cyclic number.

It is not a de Polignac number, because 6125243021 - 2⁶ = 6125242957 is a prime.

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 (6125243027) 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, 180154190 + ... + 180154223.

It is an arithmetic number, because the mean of its divisors is an integer number (1621387863).

Almost surely, 2^6125243021 is an apocalyptic number.

It is an amenable number.

6125243021 is a deficient number, since it is larger than the sum of its proper divisors (360308431).

6125243021 is a wasteful number, since it uses less digits than its factorization.

6125243021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360308430.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 6125243021 is about 78263.9318013093. The cubic root of 6125243021 is about 1829.6770530080.

Adding to 6125243021 its reverse (1203425216), we get a palindrome (7328668237).

The spelling of 6125243021 in words is "six billion, one hundred twenty-five million, two hundred forty-three thousand, twenty-one".