1252743201942 has 16 divisors (see below), whose sum is σ = 2505524733120. Its totient is φ = 417574679112.

The previous prime is 1252743201923. The next prime is 1252743201947. The reversal of 1252743201942 is 2491023472521.

It is a junction number, because it is equal to n+sod(n) for n = 1252743201894 and 1252743201903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252743201947) 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 7 ways as a sum of consecutive naturals, for example, 1163092 + ... + 1964247.

It is an arithmetic number, because the mean of its divisors is an integer number (156595295820).

Almost surely, 2^{1252743201942} is an apocalyptic number.

1252743201942 is an abundant number, since it is smaller than the sum of its proper divisors (1252781531178).

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

1252743201942 is a wasteful number, since it uses less digits than its factorization.

1252743201942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3194107.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 1252743201942 in words is "one trillion, two hundred fifty-two billion, seven hundred forty-three million, two hundred one thousand, nine hundred forty-two".