273922421 has 2 divisors, whose sum is σ = 273922422. Its totient is φ = 273922420.

The previous prime is 273922409. The next prime is 273922469. The reversal of 273922421 is 124229372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194463025 + 79459396 = 13945^2 + 8914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-273922421 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (273922021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136961210 + 136961211.

It is an arithmetic number, because the mean of its divisors is an integer number (136961211).

Almost surely, 2^273922421 is an apocalyptic number.

It is an amenable number.

273922421 is a deficient number, since it is larger than the sum of its proper divisors (1).

273922421 is an equidigital number, since it uses as much as digits as its factorization.

273922421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 32.

The square root of 273922421 is about 16550.6018319577. The cubic root of 273922421 is about 649.4452236734.

The spelling of 273922421 in words is "two hundred seventy-three million, nine hundred twenty-two thousand, four hundred twenty-one".