272632421 has 2 divisors, whose sum is σ = 272632422. Its totient is φ = 272632420.

The previous prime is 272632369. The next prime is 272632429. The reversal of 272632421 is 124236272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170015521 + 102616900 = 13039^2 + 10130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-272632421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (272632429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136316210 + 136316211.

It is an arithmetic number, because the mean of its divisors is an integer number (136316211).

Almost surely, 2^272632421 is an apocalyptic number.

It is an amenable number.

272632421 is a deficient number, since it is larger than the sum of its proper divisors (1).

272632421 is an equidigital number, since it uses as much as digits as its factorization.

272632421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 29.

The square root of 272632421 is about 16511.5844485016. The cubic root of 272632421 is about 648.4241280769.

Adding to 272632421 its reverse (124236272), we get a palindrome (396868693).

The spelling of 272632421 in words is "two hundred seventy-two million, six hundred thirty-two thousand, four hundred twenty-one".