1342240123 has 16 divisors (see below), whose sum is σ = 1636856320. Its totient is φ = 1075000896.

The previous prime is 1342240111. The next prime is 1342240129. The reversal of 1342240123 is 3210422431.

It is a cyclic number.

It is not a de Polignac number, because 1342240123 - 2¹⁷ = 1342109051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1342240094 and 1342240103.

It is not an unprimeable number, because it can be changed into a prime (1342240129) 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, 59415 + ... + 78832.

It is an arithmetic number, because the mean of its divisors is an integer number (102303520).

Almost surely, 2^1342240123 is an apocalyptic number.

1342240123 is a deficient number, since it is larger than the sum of its proper divisors (294616197).

1342240123 is a wasteful number, since it uses less digits than its factorization.

1342240123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138346.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1342240123 is about 36636.5954067787. The cubic root of 1342240123 is about 1103.0877769013.

Adding to 1342240123 its reverse (3210422431), we get a palindrome (4552662554).

The spelling of 1342240123 in words is "one billion, three hundred forty-two million, two hundred forty thousand, one hundred twenty-three".