1421207 has 8 divisors (see below), whose sum is σ = 1482912. Its totient is φ = 1360800.

The previous prime is 1421191. The next prime is 1421213. The reversal of 1421207 is 7021241.

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 1421207 - 2⁴ = 1421191 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 (1421227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2357 + ... + 2897.

It is an arithmetic number, because the mean of its divisors is an integer number (185364).

2^1421207 is an apocalyptic number.

1421207 is a deficient number, since it is larger than the sum of its proper divisors (61705).

1421207 is an equidigital number, since it uses as much as digits as its factorization.

1421207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 1421207 is about 1192.1438671570. The cubic root of 1421207 is about 112.4309238504.

Adding to 1421207 its reverse (7021241), we get a palindrome (8442448).

The spelling of 1421207 in words is "one million, four hundred twenty-one thousand, two hundred seven".