1242376020 has 72 divisors (see below), whose sum is σ = 3830353800. Its totient is φ = 325866240.

The previous prime is 1242376019. The next prime is 1242376049. The reversal of 1242376020 is 206732421.

1242376020 is a `hidden beast` number, since 1 + 24 + 2 + 37 + 602 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3617604 + 1238758416 = 1902^2 + 35196^2 .

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 23 ways as a sum of consecutive naturals, for example, 45595 + ... + 67554.

Almost surely, 2^1242376020 is an apocalyptic number.

1242376020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242376020 is an abundant number, since it is smaller than the sum of its proper divisors (2587977780).

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

1242376020 is a wasteful number, since it uses less digits than its factorization.

1242376020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113225 (or 113220 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 1242376020 is about 35247.3547943672. The cubic root of 1242376020 is about 1075.0228284317.

The spelling of 1242376020 in words is "one billion, two hundred forty-two million, three hundred seventy-six thousand, twenty".