1252142543044 has 12 divisors (see below), whose sum is σ = 2191336234668. Its totient is φ = 626046476000.

The previous prime is 1252142543039. The next prime is 1252142543077. The reversal of 1252142543044 is 4403452412521.

It can be written as a sum of positive squares in 2 ways, for example, as 797381133444 + 454761409600 = 892962^2 + 674360^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1252142542994 and 1252142543012.

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, 6085027 + ... + 6287434.

It is an arithmetic number, because the mean of its divisors is an integer number (182611352889).

Almost surely, 2^{1252142543044} is an apocalyptic number.

It is an amenable number.

1252142543044 is a deficient number, since it is larger than the sum of its proper divisors (939193691624).

1252142543044 is a wasteful number, since it uses less digits than its factorization.

1252142543044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12397766 (or 12397764 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 37.

Adding to 1252142543044 its reverse (4403452412521), we get a palindrome (5655594955565).

The spelling of 1252142543044 in words is "one trillion, two hundred fifty-two billion, one hundred forty-two million, five hundred forty-three thousand, forty-four".