1425870 has 32 divisors (see below), whose sum is σ = 3803040. Its totient is φ = 380160.

The previous prime is 1425863. The next prime is 1425877. The reversal of 1425870 is 785241.

It is an interprime number because it is at equal distance from previous prime (1425863) and next prime (1425877).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2371 + ... + 2910.

It is an arithmetic number, because the mean of its divisors is an integer number (118845).

2^1425870 is an apocalyptic number.

1425870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1425870 is an abundant number, since it is smaller than the sum of its proper divisors (2377170).

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

1425870 is a wasteful number, since it uses less digits than its factorization.

1425870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5297 (or 5291 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 1425870 is about 1194.0979859291. The cubic root of 1425870 is about 112.5537520911.

The spelling of 1425870 in words is "one million, four hundred twenty-five thousand, eight hundred seventy".