123402134041 has 4 divisors (see below), whose sum is σ = 124159202512. Its totient is φ = 122645065572.

The previous prime is 123402134039. The next prime is 123402134047. The reversal of 123402134041 is 140431204321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 140431204321 = 157351 ⋅892471.

It is a cyclic number.

It is not a de Polignac number, because 123402134041 - 2¹ = 123402134039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123402133997 and 123402134015.

It is not an unprimeable number, because it can be changed into a prime (123402134047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378533991 + ... + 378534316.

It is an arithmetic number, because the mean of its divisors is an integer number (31039800628).

Almost surely, 2^123402134041 is an apocalyptic number.

It is an amenable number.

123402134041 is a deficient number, since it is larger than the sum of its proper divisors (757068471).

123402134041 is an equidigital number, since it uses as much as digits as its factorization.

123402134041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757068470.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 123402134041 its reverse (140431204321), we get a palindrome (263833338362).

The spelling of 123402134041 in words is "one hundred twenty-three billion, four hundred two million, one hundred thirty-four thousand, forty-one".