154134020131123 has 4 divisors (see below), whose sum is σ = 154916426324880. Its totient is φ = 153351613937368.

The previous prime is 154134020131099. The next prime is 154134020131127. The reversal of 154134020131123 is 321131020431451.

It is a happy number.

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 154134020131123 - 2²¹ = 154134018033971 is a prime.

It is a super-2 number, since 2×154134020131123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154134020131127) 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, 391203096583 + ... + 391203096976.

It is an arithmetic number, because the mean of its divisors is an integer number (38729106581220).

Almost surely, 2^{154134020131123} is an apocalyptic number.

154134020131123 is a deficient number, since it is larger than the sum of its proper divisors (782406193757).

154134020131123 is an equidigital number, since it uses as much as digits as its factorization.

154134020131123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782406193756.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 154134020131123 its reverse (321131020431451), we get a palindrome (475265040562574).

The spelling of 154134020131123 in words is "one hundred fifty-four trillion, one hundred thirty-four billion, twenty million, one hundred thirty-one thousand, one hundred twenty-three".