1425143 has 6 divisors (see below), whose sum is σ = 1452672. Its totient is φ = 1398120.

The previous prime is 1425139. The next prime is 1425169. The reversal of 1425143 is 3415241.

It is not a de Polignac number, because 1425143 - 2² = 1425139 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3530 + ... + 3912.

It is an arithmetic number, because the mean of its divisors is an integer number (242112).

2^1425143 is an apocalyptic number.

1425143 is a deficient number, since it is larger than the sum of its proper divisors (27529).

1425143 is an frugal number, since it uses more digits than its factorization.

1425143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505 (or 444 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 1425143 is about 1193.7935332376. The cubic root of 1425143 is about 112.5346197980.

The spelling of 1425143 in words is "one million, four hundred twenty-five thousand, one hundred forty-three".