1242925 has 12 divisors (see below), whose sum is σ = 1562400. Its totient is φ = 980720.

The previous prime is 1242893. The next prime is 1242929. The reversal of 1242925 is 5292421.

It is not a de Polignac number, because 1242925 - 2⁵ = 1242893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1242925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242929) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1776 + ... + 2374.

It is an arithmetic number, because the mean of its divisors is an integer number (130200).

2^1242925 is an apocalyptic number.

It is an amenable number.

1242925 is a deficient number, since it is larger than the sum of its proper divisors (319475).

1242925 is an equidigital number, since it uses as much as digits as its factorization.

1242925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692 (or 687 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 1242925 is about 1114.8654627353. The cubic root of 1242925 is about 107.5181148489.

The spelling of 1242925 in words is "one million, two hundred forty-two thousand, nine hundred twenty-five".