1242161360 has 80 divisors (see below), whose sum is σ = 3156976512. Its totient is φ = 450777600.

The previous prime is 1242161359. The next prime is 1242161377. The reversal of 1242161360 is 631612421.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 554162 + ... + 556398.

Almost surely, 2^1242161360 is an apocalyptic number.

1242161360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242161360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1578488256).

1242161360 is an abundant number, since it is smaller than the sum of its proper divisors (1914815152).

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

1242161360 is a wasteful number, since it uses less digits than its factorization.

1242161360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2892 (or 2886 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1242161360 is about 35244.3096116238. The cubic root of 1242161360 is about 1074.9609100623.

Adding to 1242161360 its reverse (631612421), we get a palindrome (1873773781).

The spelling of 1242161360 in words is "one billion, two hundred forty-two million, one hundred sixty-one thousand, three hundred sixty".