1242014840 has 32 divisors (see below), whose sum is σ = 3048582960. Its totient is φ = 451641600.

The previous prime is 1242014833. The next prime is 1242014909. The reversal of 1242014840 is 484102421.

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 7 ways as a sum of consecutive naturals, for example, 1410941 + ... + 1411820.

Almost surely, 2^1242014840 is an apocalyptic number.

1242014840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242014840 is an abundant number, since it is smaller than the sum of its proper divisors (1806568120).

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

1242014840 is a wasteful number, since it uses less digits than its factorization.

1242014840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2822783 (or 2822779 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 1242014840 is about 35242.2309168985. The cubic root of 1242014840 is about 1074.9186424818.

The spelling of 1242014840 in words is "one billion, two hundred forty-two million, fourteen thousand, eight hundred forty".