1421671201 has 4 divisors (see below), whose sum is σ = 1423136304. Its totient is φ = 1420206100.

The previous prime is 1421671183. The next prime is 1421671211. The reversal of 1421671201 is 1021761241.

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.

It is a cyclic number.

It is not a de Polignac number, because 1421671201 - 2⁷ = 1421671073 is a prime.

It is a super-2 number, since 2×1421671201² = 4042298007505564802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421671211) 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 3 ways as a sum of consecutive naturals, for example, 731095 + ... + 733036.

It is an arithmetic number, because the mean of its divisors is an integer number (355784076).

Almost surely, 2^1421671201 is an apocalyptic number.

It is an amenable number.

1421671201 is a deficient number, since it is larger than the sum of its proper divisors (1465103).

1421671201 is an equidigital number, since it uses as much as digits as its factorization.

1421671201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465102.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1421671201 is about 37705.0553772303. The cubic root of 1421671201 is about 1124.4316341530.

The spelling of 1421671201 in words is "one billion, four hundred twenty-one million, six hundred seventy-one thousand, two hundred one".