1234140123 has 4 divisors (see below), whose sum is σ = 1645520168. Its totient is φ = 822760080.

The previous prime is 1234140113. The next prime is 1234140157. The reversal of 1234140123 is 3210414321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3210414321 = 3 ⋅1070138107.

It is not a de Polignac number, because 1234140123 - 2⁸ = 1234139867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1234140123.

It is not an unprimeable number, because it can be changed into a prime (1234140113) 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, 205690018 + ... + 205690023.

It is an arithmetic number, because the mean of its divisors is an integer number (411380042).

Almost surely, 2^1234140123 is an apocalyptic number.

1234140123 is a deficient number, since it is larger than the sum of its proper divisors (411380045).

1234140123 is an equidigital number, since it uses as much as digits as its factorization.

1234140123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411380044.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1234140123 is about 35130.3305279071. The cubic root of 1234140123 is about 1072.6420639781.

Adding to 1234140123 its reverse (3210414321), we get a palindrome (4444554444).

The spelling of 1234140123 in words is "one billion, two hundred thirty-four million, one hundred forty thousand, one hundred twenty-three".