123040346542 has 8 divisors (see below), whose sum is σ = 189061996032. Its totient is φ = 60019681200.

The previous prime is 123040346519. The next prime is 123040346543. The reversal of 123040346542 is 245643040321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 123040346498 and 123040346507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123040346543) 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, 750245934 + ... + 750246097.

It is an arithmetic number, because the mean of its divisors is an integer number (23632749504).

Almost surely, 2^123040346542 is an apocalyptic number.

123040346542 is a deficient number, since it is larger than the sum of its proper divisors (66021649490).

123040346542 is a wasteful number, since it uses less digits than its factorization.

123040346542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500492074.

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 123040346542 its reverse (245643040321), we get a palindrome (368683386863).

The spelling of 123040346542 in words is "one hundred twenty-three billion, forty million, three hundred forty-six thousand, five hundred forty-two".