1425919 has 4 divisors (see below), whose sum is σ = 1555560. Its totient is φ = 1296280.

The previous prime is 1425917. The next prime is 1425929. The reversal of 1425919 is 9195241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9195241 = 11 ⋅835931.

It is a cyclic number.

It is not a de Polignac number, because 1425919 - 2¹ = 1425917 is a prime.

It is a super-2 number, since 2×1425919² = 4066489989122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64804 + ... + 64825.

It is an arithmetic number, because the mean of its divisors is an integer number (388890).

2^1425919 is an apocalyptic number.

1425919 is a deficient number, since it is larger than the sum of its proper divisors (129641).

1425919 is a wasteful number, since it uses less digits than its factorization.

1425919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129640.

The product of its digits is 3240, while the sum is 31.

The square root of 1425919 is about 1194.1185033321. The cubic root of 1425919 is about 112.5550413790. Note that the first 3 decimals are identical.

The spelling of 1425919 in words is "one million, four hundred twenty-five thousand, nine hundred nineteen".