1252040455542 has 8 divisors (see below), whose sum is σ = 2504080911096. Its totient is φ = 417346818512.

The previous prime is 1252040455493. The next prime is 1252040455553. The reversal of 1252040455542 is 2455540402521.

It is a sphenic number, since it is the product of 3 distinct primes.

1252040455542 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1252040455542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104336704623 + ... + 104336704634.

It is an arithmetic number, because the mean of its divisors is an integer number (313010113887).

Almost surely, 2^{1252040455542} is an apocalyptic number.

1252040455542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1252040455542 is a wasteful number, since it uses less digits than its factorization.

1252040455542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208673409262.

The product of its (nonzero) digits is 320000, while the sum is 39.

The spelling of 1252040455542 in words is "one trillion, two hundred fifty-two billion, forty million, four hundred fifty-five thousand, five hundred forty-two".