7125421201 has 8 divisors (see below), whose sum is σ = 7304981544. Its totient is φ = 6946135680.

The previous prime is 7125421169. The next prime is 7125421223. The reversal of 7125421201 is 1021245217.

It can be written as a sum of positive squares in 4 ways, for example, as 18931201 + 7106490000 = 4351^2 + 84300^2 .

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 7125421201 - 2⁵ = 7125421169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7125421291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15690 + ... + 120403.

It is an arithmetic number, because the mean of its divisors is an integer number (913122693).

Almost surely, 2^7125421201 is an apocalyptic number.

It is an amenable number.

7125421201 is a deficient number, since it is larger than the sum of its proper divisors (179560343).

7125421201 is a wasteful number, since it uses less digits than its factorization.

7125421201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137411.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 7125421201 is about 84412.2100231951. The cubic root of 7125421201 is about 1924.2884828450.

Adding to 7125421201 its reverse (1021245217), we get a palindrome (8146666418).

The spelling of 7125421201 in words is "seven billion, one hundred twenty-five million, four hundred twenty-one thousand, two hundred one".