1421047867 has 16 divisors (see below), whose sum is σ = 1617546240. Its totient is φ = 1240092288.

The previous prime is 1421047853. The next prime is 1421047871. The reversal of 1421047867 is 7687401241.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1421047867 - 2⁷ = 1421047739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421047267) 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, 31623 + ... + 61984.

It is an arithmetic number, because the mean of its divisors is an integer number (101096640).

Almost surely, 2^1421047867 is an apocalyptic number.

1421047867 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1421047867 is a deficient number, since it is larger than the sum of its proper divisors (196498373).

1421047867 is a wasteful number, since it uses less digits than its factorization.

1421047867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93690.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 1421047867 is about 37696.7885502200. The cubic root of 1421047867 is about 1124.2672738496.

The spelling of 1421047867 in words is "one billion, four hundred twenty-one million, forty-seven thousand, eight hundred sixty-seven".