272107421 has 2 divisors, whose sum is σ = 272107422. Its totient is φ = 272107420.

The previous prime is 272107403. The next prime is 272107439. The reversal of 272107421 is 124701272.

It is a balanced prime because it is at equal distance from previous prime (272107403) and next prime (272107439).

It can be written as a sum of positive squares in only one way, i.e., 271788196 + 319225 = 16486^2 + 565^2 .

It is a cyclic number.

It is not a de Polignac number, because 272107421 - 2¹⁰ = 272106397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (272101421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136053710 + 136053711.

It is an arithmetic number, because the mean of its divisors is an integer number (136053711).

Almost surely, 2^272107421 is an apocalyptic number.

It is an amenable number.

272107421 is a deficient number, since it is larger than the sum of its proper divisors (1).

272107421 is an equidigital number, since it uses as much as digits as its factorization.

272107421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 272107421 is about 16495.6788584162. The cubic root of 272107421 is about 648.0076437205.

Adding to 272107421 its reverse (124701272), we get a palindrome (396808693).

The spelling of 272107421 in words is "two hundred seventy-two million, one hundred seven thousand, four hundred twenty-one".