1242013041040 has 20 divisors (see below), whose sum is σ = 2887680320604. Its totient is φ = 496805216384.

The previous prime is 1242013041007. The next prime is 1242013041047. The reversal of 1242013041040 is 401403102421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 254867464336 + 987145576704 = 504844^2 + 993552^2 .

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

It is a super-2 number, since 2×1242013041040² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1242013041047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7762581427 + ... + 7762581586.

Almost surely, 2^{1242013041040} is an apocalyptic number.

1242013041040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242013041040 is an abundant number, since it is smaller than the sum of its proper divisors (1645667279564).

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

1242013041040 is a wasteful number, since it uses less digits than its factorization.

1242013041040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15525163026 (or 15525163020 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 1242013041040 its reverse (401403102421), we get a palindrome (1643416143461).

The spelling of 1242013041040 in words is "one trillion, two hundred forty-two billion, thirteen million, forty-one thousand, forty".