123240334153 has 2 divisors, whose sum is σ = 123240334154. Its totient is φ = 123240334152.

The previous prime is 123240334127. The next prime is 123240334159. The reversal of 123240334153 is 351433042321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63045183744 + 60195150409 = 251088^2 + 245347^2 .

It is a cyclic number.

It is not a de Polignac number, because 123240334153 - 2¹³ = 123240325961 is a prime.

It is not a weakly prime, because it can be changed into another prime (123240334159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61620167076 + 61620167077.

It is an arithmetic number, because the mean of its divisors is an integer number (61620167077).

Almost surely, 2^123240334153 is an apocalyptic number.

It is an amenable number.

123240334153 is a deficient number, since it is larger than the sum of its proper divisors (1).

123240334153 is an equidigital number, since it uses as much as digits as its factorization.

123240334153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 123240334153 its reverse (351433042321), we get a palindrome (474673376474).

The spelling of 123240334153 in words is "one hundred twenty-three billion, two hundred forty million, three hundred thirty-four thousand, one hundred fifty-three".