1425671 has 8 divisors (see below), whose sum is σ = 1625904. Its totient is φ = 1238400.

The previous prime is 1425667. The next prime is 1425707. The reversal of 1425671 is 1765241.

1425671 = 64² + 65² + ... + 165².

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 1425671 - 2² = 1425667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1425671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425601) 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, 3005 + ... + 3446.

It is an arithmetic number, because the mean of its divisors is an integer number (203238).

2^1425671 is an apocalyptic number.

1425671 is a deficient number, since it is larger than the sum of its proper divisors (200233).

1425671 is a wasteful number, since it uses less digits than its factorization.

1425671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6481.

The product of its digits is 1680, while the sum is 26.

The square root of 1425671 is about 1194.0146565265. The cubic root of 1425671 is about 112.5485157001.

The spelling of 1425671 in words is "one million, four hundred twenty-five thousand, six hundred seventy-one".