1242625 has 8 divisors (see below), whose sum is σ = 1550952. Its totient is φ = 994000.

The previous prime is 1242623. The next prime is 1242629. The reversal of 1242625 is 5262421.

It can be written as a sum of positive squares in 4 ways, for example, as 394384 + 848241 = 628^2 + 921^2 .

It is not a de Polignac number, because 1242625 - 2¹ = 1242623 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 1242596 and 1242605.

It is not an unprimeable number, because it can be changed into a prime (1242623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4846 + ... + 5095.

It is an arithmetic number, because the mean of its divisors is an integer number (193869).

2^1242625 is an apocalyptic number.

It is an amenable number.

1242625 is a deficient number, since it is larger than the sum of its proper divisors (308327).

1242625 is an frugal number, since it uses more digits than its factorization.

1242625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9956 (or 9946 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 1242625 is about 1114.7309092333. The cubic root of 1242625 is about 107.5094637423.

The spelling of 1242625 in words is "one million, two hundred forty-two thousand, six hundred twenty-five".