1242119904 has 48 divisors (see below), whose sum is σ = 3365752320. Its totient is φ = 400682880.

The previous prime is 1242119903. The next prime is 1242119911. The reversal of 1242119904 is 4099112421.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242119903) by changing a digit.

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, 205714 + ... + 211665.

It is an arithmetic number, because the mean of its divisors is an integer number (70119840).

Almost surely, 2^1242119904 is an apocalyptic number.

It is an amenable number.

1242119904 is an abundant number, since it is smaller than the sum of its proper divisors (2123632416).

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

1242119904 is a wasteful number, since it uses less digits than its factorization.

1242119904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417423 (or 417415 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1242119904 is about 35243.7214834075. The cubic root of 1242119904 is about 1074.9489513166.

The spelling of 1242119904 in words is "one billion, two hundred forty-two million, one hundred nineteen thousand, nine hundred four".