1425240 has 96 divisors (see below), whose sum is σ = 4801680. Its totient is φ = 366336.

The previous prime is 1425227. The next prime is 1425251. The reversal of 1425240 is 425241.

1425240 is a `hidden beast` number, since 1 + 425 + 240 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13267 + ... + 13373.

2^1425240 is an apocalyptic number.

1425240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1425240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2400840).

1425240 is an abundant number, since it is smaller than the sum of its proper divisors (3376440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1425240 is a wasteful number, since it uses less digits than its factorization.

1425240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 1425240 is about 1193.8341593370. The cubic root of 1425240 is about 112.5371729009.

Subtracting from 1425240 its reverse (425241), we obtain a palindrome (999999).

The spelling of 1425240 in words is "one million, four hundred twenty-five thousand, two hundred forty".