1242522 has 12 divisors (see below), whose sum is σ = 2692170. Its totient is φ = 414168.

The previous prime is 1242517. The next prime is 1242569. The reversal of 1242522 is 2252421.

It can be written as a sum of positive squares in only one way, i.e., 1147041 + 95481 = 1071^2 + 309^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 69029 = 1242522 / (1 + 2 + 4 + 2 + 5 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 1242495 and 1242504.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34497 + ... + 34532.

2^1242522 is an apocalyptic number.

1242522 is an abundant number, since it is smaller than the sum of its proper divisors (1449648).

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

1242522 is a wasteful number, since it uses less digits than its factorization.

1242522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69037 (or 69034 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 1242522 is about 1114.6847087854. The cubic root of 1242522 is about 107.5064932079.

Adding to 1242522 its reverse (2252421), we get a palindrome (3494943).

It can be divided in two parts, 1242 and 522, that added together give a square (1764 = 42²).

The spelling of 1242522 in words is "one million, two hundred forty-two thousand, five hundred twenty-two".