1252301400424 has 8 divisors (see below), whose sum is σ = 2348065125810. Its totient is φ = 626150700208.

The previous prime is 1252301400407. The next prime is 1252301400433. The reversal of 1252301400424 is 4240041032521.

It can be written as a sum of positive squares in only one way, i.e., 1060879400100 + 191422000324 = 1029990^2 + 437518^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1252301400392 and 1252301400401.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78268837519 + ... + 78268837534.

Almost surely, 2^{1252301400424} is an apocalyptic number.

It is an amenable number.

1252301400424 is a deficient number, since it is larger than the sum of its proper divisors (1095763725386).

1252301400424 is a wasteful number, since it uses less digits than its factorization.

1252301400424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156537675059 (or 156537675055 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 1252301400424 its reverse (4240041032521), we get a palindrome (5492342432945).

The spelling of 1252301400424 in words is "one trillion, two hundred fifty-two billion, three hundred one million, four hundred thousand, four hundred twenty-four".