1421231727 has 8 divisors (see below), whose sum is σ = 1909897216. Its totient is φ = 940027032.

The previous prime is 1421231723. The next prime is 1421231737. The reversal of 1421231727 is 7271321241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1421231727 - 2² = 1421231723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1421231694 and 1421231703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421231723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1864753 + ... + 1865514.

It is an arithmetic number, because the mean of its divisors is an integer number (238737152).

Almost surely, 2^1421231727 is an apocalyptic number.

1421231727 is a deficient number, since it is larger than the sum of its proper divisors (488665489).

1421231727 is a wasteful number, since it uses less digits than its factorization.

1421231727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3730397.

The product of its digits is 4704, while the sum is 30.

The square root of 1421231727 is about 37699.2271406192. The cubic root of 1421231727 is about 1124.3157589315.

Adding to 1421231727 its reverse (7271321241), we get a palindrome (8692552968).

The spelling of 1421231727 in words is "one billion, four hundred twenty-one million, two hundred thirty-one thousand, seven hundred twenty-seven".