1242025 has 6 divisors (see below), whose sum is σ = 1540142. Its totient is φ = 993600.

The previous prime is 1242001. The next prime is 1242029. The reversal of 1242025 is 5202421.

It can be written as a sum of positive squares in 3 ways, for example, as 183184 + 1058841 = 428^2 + 1029^2 .

It is not a de Polignac number, because 1242025 - 2¹⁷ = 1110953 is a prime.

It is a super-2 number, since 2×1242025² = 3085252201250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24816 + ... + 24865.

2^1242025 is an apocalyptic number.

It is an amenable number.

1242025 is a deficient number, since it is larger than the sum of its proper divisors (298117).

1242025 is an equidigital number, since it uses as much as digits as its factorization.

1242025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49691 (or 49686 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 1242025 is about 1114.4617534936. The cubic root of 1242025 is about 107.4921573511.

Adding to 1242025 its reverse (5202421), we get a palindrome (6444446).

The spelling of 1242025 in words is "one million, two hundred forty-two thousand, twenty-five".