1242513035451 has 16 divisors (see below), whose sum is σ = 1840802233120. Its totient is φ = 828323042400.

The previous prime is 1242513035399. The next prime is 1242513035473. The reversal of 1242513035451 is 1545303152421.

1242513035451 is a `hidden beast` number, since 1 + 2 + 4 + 251 + 3 + 0 + 354 + 51 = 666.

It is not a de Polignac number, because 1242513035451 - 2³⁸ = 967635128507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242513035251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 727101 + ... + 1736001.

It is an arithmetic number, because the mean of its divisors is an integer number (115050139570).

Almost surely, 2^{1242513035451} is an apocalyptic number.

1242513035451 is a deficient number, since it is larger than the sum of its proper divisors (598289197669).

1242513035451 is a wasteful number, since it uses less digits than its factorization.

1242513035451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054523 (or 1054517 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 1242513035451 its reverse (1545303152421), we get a palindrome (2787816187872).

The spelling of 1242513035451 in words is "one trillion, two hundred forty-two billion, five hundred thirteen million, thirty-five thousand, four hundred fifty-one".