1242515210 has 16 divisors (see below), whose sum is σ = 2368088136. Its totient is φ = 467770368.

The previous prime is 1242515207. The next prime is 1242515221. The reversal of 1242515210 is 125152421.

It can be written as a sum of positive squares in 4 ways, for example, as 1238406481 + 4108729 = 35191^2 + 2027^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3654287 + ... + 3654626.

Almost surely, 2^1242515210 is an apocalyptic number.

1242515210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242515210 is a deficient number, since it is larger than the sum of its proper divisors (1125572926).

1242515210 is a wasteful number, since it uses less digits than its factorization.

1242515210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7308937.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1242515210 is about 35249.3292134758. The cubic root of 1242515210 is about 1075.0629737762.

Adding to 1242515210 its reverse (125152421), we get a palindrome (1367667631).

The spelling of 1242515210 in words is "one billion, two hundred forty-two million, five hundred fifteen thousand, two hundred ten".