1252422045442 has 8 divisors (see below), whose sum is σ = 1989140895756. Its totient is φ = 589375080192.

The previous prime is 1252422045431. The next prime is 1252422045473. The reversal of 1252422045442 is 2445402242521.

It can be written as a sum of positive squares in 2 ways, for example, as 1011752327881 + 240669717561 = 1005859^2 + 490581^2 .

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

It is a super-2 number, since 2×1252422045442² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18417971223 + ... + 18417971290.

Almost surely, 2^{1252422045442} is an apocalyptic number.

1252422045442 is a deficient number, since it is larger than the sum of its proper divisors (736718850314).

1252422045442 is a wasteful number, since it uses less digits than its factorization.

1252422045442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36835942532.

The product of its (nonzero) digits is 204800, while the sum is 37.

Adding to 1252422045442 its reverse (2445402242521), we get a palindrome (3697824287963).

The spelling of 1252422045442 in words is "one trillion, two hundred fifty-two billion, four hundred twenty-two million, forty-five thousand, four hundred forty-two".