1242535040 has 32 divisors (see below), whose sum is σ = 2970436860. Its totient is φ = 497013760.

The previous prime is 1242535037. The next prime is 1242535057. The reversal of 1242535040 is 405352421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1144604224 + 97930816 = 33832^2 + 9896^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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 3 ways as a sum of consecutive naturals, for example, 970091 + ... + 971370.

Almost surely, 2^1242535040 is an apocalyptic number.

1242535040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242535040 is an abundant number, since it is smaller than the sum of its proper divisors (1727901820).

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

1242535040 is an equidigital number, since it uses as much as digits as its factorization.

1242535040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941480 (or 1941468 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1242535040 is about 35249.6104943019. The cubic root of 1242535040 is about 1075.0686929243.

Adding to 1242535040 its reverse (405352421), we get a palindrome (1647887461).

The spelling of 1242535040 in words is "one billion, two hundred forty-two million, five hundred thirty-five thousand, forty".