1242741264 has 80 divisors (see below), whose sum is σ = 3255595200. Its totient is φ = 408457728.

The previous prime is 1242741257. The next prime is 1242741281. The reversal of 1242741264 is 4621472421.

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, 1406967 + ... + 1407849.

It is an arithmetic number, because the mean of its divisors is an integer number (40694940).

Almost surely, 2^1242741264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242741264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1627797600).

1242741264 is an abundant number, since it is smaller than the sum of its proper divisors (2012853936).

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

1242741264 is a wasteful number, since it uses less digits than its factorization.

1242741264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272 (or 1266 counting only the distinct ones).

The product of its digits is 21504, while the sum is 33.

The square root of 1242741264 is about 35252.5355683815. The cubic root of 1242741264 is about 1075.1281661503.

The spelling of 1242741264 in words is "one billion, two hundred forty-two million, seven hundred forty-one thousand, two hundred sixty-four".