1242373040 has 20 divisors (see below), whose sum is σ = 2888517504. Its totient is φ = 496949184.

The previous prime is 1242372997. The next prime is 1242373049. The reversal of 1242373040 is 403732421.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (1242373049) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7764752 + ... + 7764911.

Almost surely, 2^1242373040 is an apocalyptic number.

1242373040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242373040 is an abundant number, since it is smaller than the sum of its proper divisors (1646144464).

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

1242373040 is a wasteful number, since it uses less digits than its factorization.

1242373040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15529676 (or 15529670 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 1242373040 is about 35247.3125216661. The cubic root of 1242373040 is about 1075.0219689038.

The spelling of 1242373040 in words is "one billion, two hundred forty-two million, three hundred seventy-three thousand, forty".