123542474011 has 4 divisors (see below), whose sum is σ = 134773608024. Its totient is φ = 112311340000.

The previous prime is 123542473973. The next prime is 123542474021. The reversal of 123542474011 is 110474245321.

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 123542474011 - 2²⁹ = 123005603099 is a prime.

It is a super-2 number, since 2×123542474011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123542474021) 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, 5615566990 + ... + 5615567011.

It is an arithmetic number, because the mean of its divisors is an integer number (33693402006).

Almost surely, 2^123542474011 is an apocalyptic number.

123542474011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123542474011 is a deficient number, since it is larger than the sum of its proper divisors (11231134013).

123542474011 is a wasteful number, since it uses less digits than its factorization.

123542474011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11231134012.

The product of its (nonzero) digits is 26880, while the sum is 34.

The spelling of 123542474011 in words is "one hundred twenty-three billion, five hundred forty-two million, four hundred seventy-four thousand, eleven".