1520242 has 16 divisors (see below), whose sum is σ = 2457432. Its totient is φ = 702720.

The previous prime is 1520227. The next prime is 1520251. The reversal of 1520242 is 2420251.

It can be written as a sum of positive squares in 4 ways, for example, as 1442401 + 77841 = 1201^2 + 279^2 .

It is a super-2 number, since 2×1520242² = 4622271477128, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1708 + ... + 2440.

2^1520242 is an apocalyptic number.

1520242 is a deficient number, since it is larger than the sum of its proper divisors (937190).

1520242 is a wasteful number, since it uses less digits than its factorization.

1520242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813.

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

The square root of 1520242 is about 1232.9809406475. The cubic root of 1520242 is about 114.9840431546.

Adding to 1520242 its reverse (2420251), we get a palindrome (3940493).

Subtracting 1520242 from its reverse (2420251), we obtain a palindrome (900009).

The spelling of 1520242 in words is "one million, five hundred twenty thousand, two hundred forty-two".