1412121665 has 8 divisors (see below), whose sum is σ = 1726518888. Its totient is φ = 1108382080.

The previous prime is 1412121661. The next prime is 1412121673. The reversal of 1412121665 is 5661212141.

It can be written as a sum of positive squares in 4 ways, for example, as 131698576 + 1280423089 = 11476^2 + 35783^2 .

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

It is not a de Polignac number, because 1412121665 - 2² = 1412121661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1412121661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2664116 + ... + 2664645.

It is an arithmetic number, because the mean of its divisors is an integer number (215814861).

Almost surely, 2^1412121665 is an apocalyptic number.

It is an amenable number.

1412121665 is a deficient number, since it is larger than the sum of its proper divisors (314397223).

1412121665 is an equidigital number, since it uses as much as digits as its factorization.

1412121665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5328819.

The product of its digits is 2880, while the sum is 29.

The square root of 1412121665 is about 37578.2073148787. The cubic root of 1412121665 is about 1121.9083285180.

The spelling of 1412121665 in words is "one billion, four hundred twelve million, one hundred twenty-one thousand, six hundred sixty-five".