1242155010 has 32 divisors (see below), whose sum is σ = 3044604672. Its totient is φ = 324193280.

The previous prime is 1242154987. The next prime is 1242155021. The reversal of 1242155010 is 105512421.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439071 + ... + 441890.

It is an arithmetic number, because the mean of its divisors is an integer number (95143896).

Almost surely, 2^1242155010 is an apocalyptic number.

1242155010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242155010 is an abundant number, since it is smaller than the sum of its proper divisors (1802449662).

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

1242155010 is a wasteful number, since it uses less digits than its factorization.

1242155010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881018.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1242155010 is about 35244.2195260443. The cubic root of 1242155010 is about 1074.9590783053.

Adding to 1242155010 its reverse (105512421), we get a palindrome (1347667431).

The spelling of 1242155010 in words is "one billion, two hundred forty-two million, one hundred fifty-five thousand, ten".