1252040123434 has 4 divisors (see below), whose sum is σ = 1878060185154. Its totient is φ = 626020061716.

The previous prime is 1252040123371. The next prime is 1252040123441. The reversal of 1252040123434 is 4343210402521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 925353574209 + 326686549225 = 961953^2 + 571565^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1252040123396 and 1252040123405.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313010030857 + ... + 313010030860.

Almost surely, 2^{1252040123434} is an apocalyptic number.

1252040123434 is a deficient number, since it is larger than the sum of its proper divisors (626020061720).

1252040123434 is an equidigital number, since it uses as much as digits as its factorization.

1252040123434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626020061719.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 1252040123434 its reverse (4343210402521), we get a palindrome (5595250525955).

The spelling of 1252040123434 in words is "one trillion, two hundred fifty-two billion, forty million, one hundred twenty-three thousand, four hundred thirty-four".