1246080421 has 8 divisors (see below), whose sum is σ = 1256105304. Its totient is φ = 1236088320.

The previous prime is 1246080383. The next prime is 1246080463. The reversal of 1246080421 is 1240806421.

It can be written as a sum of positive squares in 4 ways, for example, as 771450625 + 474629796 = 27775^2 + 21786^2 .

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 1246080421 - 2⁷ = 1246080293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1246080421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1246080481) 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, 71181 + ... + 86941.

It is an arithmetic number, because the mean of its divisors is an integer number (157013163).

Almost surely, 2^1246080421 is an apocalyptic number.

It is an amenable number.

1246080421 is a deficient number, since it is larger than the sum of its proper divisors (10024883).

1246080421 is a wasteful number, since it uses less digits than its factorization.

1246080421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16391.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 1246080421 is about 35299.8643198526. The cubic root of 1246080421 is about 1076.0902358531.

Adding to 1246080421 its reverse (1240806421), we get a palindrome (2486886842).

The spelling of 1246080421 in words is "one billion, two hundred forty-six million, eighty thousand, four hundred twenty-one".