1242752880 has 40 divisors (see below), whose sum is σ = 3852534672. Its totient is φ = 331400704.

The previous prime is 1242752879. The next prime is 1242752923. The reversal of 1242752880 is 882572421.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2588829 + ... + 2589308.

Almost surely, 2^1242752880 is an apocalyptic number.

1242752880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242752880 is an abundant number, since it is smaller than the sum of its proper divisors (2609781792).

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

1242752880 is a wasteful number, since it uses less digits than its factorization.

1242752880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5178153 (or 5178147 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 39.

The square root of 1242752880 is about 35252.7003221030. The cubic root of 1242752880 is about 1075.1315159089.

The spelling of 1242752880 in words is "one billion, two hundred forty-two million, seven hundred fifty-two thousand, eight hundred eighty".