1251351530042 has 8 divisors (see below), whose sum is σ = 1878729045696. Its totient is φ = 625108514812.

The previous prime is 1251351530029. The next prime is 1251351530047. The reversal of 1251351530042 is 2400351531521.

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

It is a junction number, because it is equal to n+sod(n) for n = 1251351529990 and 1251351530008.

It is not an unprimeable number, because it can be changed into a prime (1251351530047) by changing a digit.

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, 283622348 + ... + 283626759.

It is an arithmetic number, because the mean of its divisors is an integer number (234841130712).

Almost surely, 2^{1251351530042} is an apocalyptic number.

1251351530042 is a deficient number, since it is larger than the sum of its proper divisors (627377515654).

1251351530042 is a wasteful number, since it uses less digits than its factorization.

1251351530042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567250212.

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 1251351530042 in words is "one trillion, two hundred fifty-one billion, three hundred fifty-one million, five hundred thirty thousand, forty-two".