1123400667839 has 4 divisors (see below), whose sum is σ = 1123460790360. Its totient is φ = 1123340545320.

The previous prime is 1123400667833. The next prime is 1123400667863. The reversal of 1123400667839 is 9387660043211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1123400667839 - 2¹² = 1123400663743 is a prime.

It is a super-2 number, since 2×1123400667839² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123400667833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30033224 + ... + 30070605.

It is an arithmetic number, because the mean of its divisors is an integer number (280865197590).

Almost surely, 2^{1123400667839} is an apocalyptic number.

1123400667839 is a deficient number, since it is larger than the sum of its proper divisors (60122521).

1123400667839 is an equidigital number, since it uses as much as digits as its factorization.

1123400667839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60122520.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 1123400667839 in words is "one trillion, one hundred twenty-three billion, four hundred million, six hundred sixty-seven thousand, eight hundred thirty-nine".