1235478113421 has 16 divisors (see below), whose sum is σ = 1701387391488. Its totient is φ = 796639968000.

The previous prime is 1235478113393. The next prime is 1235478113489. The reversal of 1235478113421 is 1243118745321.

It is not a de Polignac number, because 1235478113421 - 2⁷ = 1235478113293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1235478117421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3520656 + ... + 3855641.

It is an arithmetic number, because the mean of its divisors is an integer number (106336711968).

Almost surely, 2^{1235478113421} is an apocalyptic number.

It is an amenable number.

1235478113421 is a deficient number, since it is larger than the sum of its proper divisors (465909278067).

1235478113421 is a wasteful number, since it uses less digits than its factorization.

1235478113421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7378132.

The product of its digits is 161280, while the sum is 42.

The spelling of 1235478113421 in words is "one trillion, two hundred thirty-five billion, four hundred seventy-eight million, one hundred thirteen thousand, four hundred twenty-one".