123342700521 has 8 divisors (see below), whose sum is σ = 169761996544. Its totient is φ = 79575935760.

The previous prime is 123342700511. The next prime is 123342700531. The reversal of 123342700521 is 125007243321.

It is an interprime number because it is at equal distance from previous prime (123342700511) and next prime (123342700531).

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

It is not a de Polignac number, because 123342700521 - 2⁹ = 123342700009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123342700511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663132706 + ... + 663132891.

It is an arithmetic number, because the mean of its divisors is an integer number (21220249568).

Almost surely, 2^123342700521 is an apocalyptic number.

It is an amenable number.

123342700521 is a deficient number, since it is larger than the sum of its proper divisors (46419296023).

123342700521 is a wasteful number, since it uses less digits than its factorization.

123342700521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326265631.

The product of its (nonzero) digits is 10080, while the sum is 30.

Adding to 123342700521 its reverse (125007243321), we get a palindrome (248349943842).

The spelling of 123342700521 in words is "one hundred twenty-three billion, three hundred forty-two million, seven hundred thousand, five hundred twenty-one".