1421612897 has 4 divisors (see below), whose sum is σ = 1422594096. Its totient is φ = 1420631700.

The previous prime is 1421612867. The next prime is 1421612903. The reversal of 1421612897 is 7982161241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7982161241 = 241 ⋅33121001.

It is a cyclic number.

It is not a de Polignac number, because 1421612897 - 2¹² = 1421608801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421612867) 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, 488423 + ... + 491324.

It is an arithmetic number, because the mean of its divisors is an integer number (355648524).

Almost surely, 2^1421612897 is an apocalyptic number.

It is an amenable number.

1421612897 is a deficient number, since it is larger than the sum of its proper divisors (981199).

1421612897 is an equidigital number, since it uses as much as digits as its factorization.

1421612897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981198.

The product of its digits is 48384, while the sum is 41.

The square root of 1421612897 is about 37704.2822103803. The cubic root of 1421612897 is about 1124.4162626291.

The spelling of 1421612897 in words is "one billion, four hundred twenty-one million, six hundred twelve thousand, eight hundred ninety-seven".