1421011999 has 8 divisors (see below), whose sum is σ = 1565246592. Its totient is φ = 1279286040.

The previous prime is 1421011981. The next prime is 1421012011. The reversal of 1421011999 is 9991101241.

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

It is a cyclic number.

It is not a de Polignac number, because 1421011999 - 2¹¹ = 1421009951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421011909) 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 7 ways as a sum of consecutive naturals, for example, 625969 + ... + 628234.

It is an arithmetic number, because the mean of its divisors is an integer number (195655824).

Almost surely, 2^1421011999 is an apocalyptic number.

1421011999 is a deficient number, since it is larger than the sum of its proper divisors (144234593).

1421011999 is a wasteful number, since it uses less digits than its factorization.

1421011999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254317.

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 1421011999 is about 37696.3128037743. The cubic root of 1421011999 is about 1124.2578147364.

The spelling of 1421011999 in words is "one billion, four hundred twenty-one million, eleven thousand, nine hundred ninety-nine".