1425839 has 8 divisors (see below), whose sum is σ = 1520640. Its totient is φ = 1333816.

The previous prime is 1425821. The next prime is 1425863. The reversal of 1425839 is 9385241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1425839 - 2⁸ = 1425583 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 (1425889) 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, 422 + ... + 1740.

It is an arithmetic number, because the mean of its divisors is an integer number (190080).

2^1425839 is an apocalyptic number.

1425839 is a deficient number, since it is larger than the sum of its proper divisors (94801).

1425839 is a wasteful number, since it uses less digits than its factorization.

1425839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389.

The product of its digits is 8640, while the sum is 32.

The square root of 1425839 is about 1194.0850053493. The cubic root of 1425839 is about 112.5529364040.

The spelling of 1425839 in words is "one million, four hundred twenty-five thousand, eight hundred thirty-nine".