1421907 has 8 divisors (see below), whose sum is σ = 1909200. Its totient is φ = 941280.

The previous prime is 1421867. The next prime is 1421909. The reversal of 1421907 is 7091241.

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

It is not a de Polignac number, because 1421907 - 2⁷ = 1421779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1421909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1144 + ... + 2037.

It is an arithmetic number, because the mean of its divisors is an integer number (238650).

2^1421907 is an apocalyptic number.

1421907 is a deficient number, since it is larger than the sum of its proper divisors (487293).

1421907 is a wasteful number, since it uses less digits than its factorization.

1421907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 1421907 is about 1192.4374197416. The cubic root of 1421907 is about 112.4493796955.

The spelling of 1421907 in words is "one million, four hundred twenty-one thousand, nine hundred seven".