1406215 has 4 divisors (see below), whose sum is σ = 1687464. Its totient is φ = 1124968.

The previous prime is 1406213. The next prime is 1406221. The reversal of 1406215 is 5126041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5126041 = 199 ⋅25759.

It is a cyclic number.

It is not a de Polignac number, because 1406215 - 2¹ = 1406213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1406192 and 1406201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406213) 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 3 ways as a sum of consecutive naturals, for example, 140617 + ... + 140626.

It is an arithmetic number, because the mean of its divisors is an integer number (421866).

2^1406215 is an apocalyptic number.

1406215 is a deficient number, since it is larger than the sum of its proper divisors (281249).

1406215 is an equidigital number, since it uses as much as digits as its factorization.

1406215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281248.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1406215 is about 1185.8393651756. The cubic root of 1406215 is about 112.0341891797.

The spelling of 1406215 in words is "one million, four hundred six thousand, two hundred fifteen".