1416721 has 8 divisors (see below), whose sum is σ = 1482624. Its totient is φ = 1352400.

The previous prime is 1416713. The next prime is 1416739. The reversal of 1416721 is 1276141.

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 1416721 - 2³ = 1416713 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1416692 and 1416701.

It is not an unprimeable number, because it can be changed into a prime (1411721) 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, 1671 + ... + 2371.

It is an arithmetic number, because the mean of its divisors is an integer number (185328).

2^1416721 is an apocalyptic number.

It is an amenable number.

1416721 is a deficient number, since it is larger than the sum of its proper divisors (65903).

1416721 is an equidigital number, since it uses as much as digits as its factorization.

1416721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791.

The product of its digits is 336, while the sum is 22.

The square root of 1416721 is about 1190.2608957703. The cubic root of 1416721 is about 112.3125041483.

The spelling of 1416721 in words is "one million, four hundred sixteen thousand, seven hundred twenty-one".