1246421886 has 32 divisors (see below), whose sum is σ = 2569587360. Its totient is φ = 402765696.

The previous prime is 1246421881. The next prime is 1246421887. The reversal of 1246421886 is 6881246421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1246421881) 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 15 ways as a sum of consecutive naturals, for example, 51360 + ... + 71628.

It is an arithmetic number, because the mean of its divisors is an integer number (80299605).

Almost surely, 2^1246421886 is an apocalyptic number.

1246421886 is an abundant number, since it is smaller than the sum of its proper divisors (1323165474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1246421886 is a wasteful number, since it uses less digits than its factorization.

1246421886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20588.

The product of its digits is 147456, while the sum is 42.

The square root of 1246421886 is about 35304.7006218719. The cubic root of 1246421886 is about 1076.1885210005.

The spelling of 1246421886 in words is "one billion, two hundred forty-six million, four hundred twenty-one thousand, eight hundred eighty-six".