1239113781434 has 4 divisors (see below), whose sum is σ = 1858670672154. Its totient is φ = 619556890716.

The previous prime is 1239113781421. The next prime is 1239113781443. The reversal of 1239113781434 is 4341873119321.

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., 884451845209 + 354661936225 = 940453^2 + 595535^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309778445357 + ... + 309778445360.

Almost surely, 2^{1239113781434} is an apocalyptic number.

1239113781434 is a deficient number, since it is larger than the sum of its proper divisors (619556890720).

1239113781434 is an equidigital number, since it uses as much as digits as its factorization.

1239113781434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619556890719.

The product of its digits is 435456, while the sum is 47.

The spelling of 1239113781434 in words is "one trillion, two hundred thirty-nine billion, one hundred thirteen million, seven hundred eighty-one thousand, four hundred thirty-four".