1252122054442 has 16 divisors (see below), whose sum is σ = 2146746530880. Its totient is φ = 536560842528.

The previous prime is 1252122054439. The next prime is 1252122054457. The reversal of 1252122054442 is 2444502212521.

It is a junction number, because it is equal to n+sod(n) for n = 1252122054398 and 1252122054407.

It is an unprimeable number.

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, 5117443 + ... + 5356534.

It is an arithmetic number, because the mean of its divisors is an integer number (134171658180).

Almost surely, 2^{1252122054442} is an apocalyptic number.

1252122054442 is a deficient number, since it is larger than the sum of its proper divisors (894624476438).

1252122054442 is a wasteful number, since it uses less digits than its factorization.

1252122054442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10482525.

The product of its (nonzero) digits is 51200, while the sum is 34.

Adding to 1252122054442 its reverse (2444502212521), we get a palindrome (3696624266963).

The spelling of 1252122054442 in words is "one trillion, two hundred fifty-two billion, one hundred twenty-two million, fifty-four thousand, four hundred forty-two".