1242123110 has 8 divisors (see below), whose sum is σ = 2235821616. Its totient is φ = 496849240.

The previous prime is 1242123109. The next prime is 1242123143. The reversal of 1242123110 is 113212421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 62106146 + ... + 62106165.

It is an arithmetic number, because the mean of its divisors is an integer number (279477702).

Almost surely, 2^1242123110 is an apocalyptic number.

1242123110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242123110 is a deficient number, since it is larger than the sum of its proper divisors (993698506).

1242123110 is a wasteful number, since it uses less digits than its factorization.

1242123110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124212318.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1242123110 is about 35243.7669666567. The cubic root of 1242123110 is about 1074.9498761558.

Adding to 1242123110 its reverse (113212421), we get a palindrome (1355335531).

The spelling of 1242123110 in words is "one billion, two hundred forty-two million, one hundred twenty-three thousand, one hundred ten".