1425270 has 64 divisors (see below), whose sum is σ = 4271616. Its totient is φ = 295680.

The previous prime is 1425253. The next prime is 1425271. The reversal of 1425270 is 725241.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2002 + ... + 2618.

It is an arithmetic number, because the mean of its divisors is an integer number (66744).

2^1425270 is an apocalyptic number.

1425270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1425270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2135808).

1425270 is an abundant number, since it is smaller than the sum of its proper divisors (2846346).

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

1425270 is a wasteful number, since it uses less digits than its factorization.

1425270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 1425270 is about 1193.8467238302. The cubic root of 1425270 is about 112.5379624970.

The spelling of 1425270 in words is "one million, four hundred twenty-five thousand, two hundred seventy".