1421607 has 16 divisors (see below), whose sum is σ = 2158848. Its totient is φ = 823680.

The previous prime is 1421603. The next prime is 1421611. The reversal of 1421607 is 7061241.

It is an interprime number because it is at equal distance from previous prime (1421603) and next prime (1421611).

It is not a de Polignac number, because 1421607 - 2² = 1421603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421603) 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 15 ways as a sum of consecutive naturals, for example, 178 + ... + 1695.

It is an arithmetic number, because the mean of its divisors is an integer number (134928).

2^1421607 is an apocalyptic number.

1421607 is a deficient number, since it is larger than the sum of its proper divisors (737241).

1421607 is a wasteful number, since it uses less digits than its factorization.

1421607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 1421607 is about 1192.3116203409. The cubic root of 1421607 is about 112.4414707895.

Adding to 1421607 its reverse (7061241), we get a palindrome (8482848).

The spelling of 1421607 in words is "one million, four hundred twenty-one thousand, six hundred seven".