1421104009 has 4 divisors (see below), whose sum is σ = 1530419716. Its totient is φ = 1311788304.

The previous prime is 1421103973. The next prime is 1421104057. The reversal of 1421104009 is 9004011241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 184878409 + 1236225600 = 13597^2 + 35160^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421104009 - 2¹³ = 1421095817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421104099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54657834 + ... + 54657859.

It is an arithmetic number, because the mean of its divisors is an integer number (382604929).

Almost surely, 2^1421104009 is an apocalyptic number.

It is an amenable number.

1421104009 is a deficient number, since it is larger than the sum of its proper divisors (109315707).

1421104009 is a wasteful number, since it uses less digits than its factorization.

1421104009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109315706.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1421104009 is about 37697.5331951575. The cubic root of 1421104009 is about 1124.2820793049.

The spelling of 1421104009 in words is "one billion, four hundred twenty-one million, one hundred four thousand, nine".