123701742561 has 8 divisors (see below), whose sum is σ = 164937747520. Its totient is φ = 82466782992.

The previous prime is 123701742557. The next prime is 123701742569. The reversal of 123701742561 is 165247107321.

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

It is not a de Polignac number, because 123701742561 - 2² = 123701742557 is a prime.

It is a super-2 number, since 2×123701742561² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123701742569) 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, 77535 + ... + 503403.

It is an arithmetic number, because the mean of its divisors is an integer number (20617218440).

Almost surely, 2^123701742561 is an apocalyptic number.

It is an amenable number.

123701742561 is a deficient number, since it is larger than the sum of its proper divisors (41236004959).

123701742561 is an equidigital number, since it uses as much as digits as its factorization.

123701742561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522695.

The product of its (nonzero) digits is 70560, while the sum is 39.

Adding to 123701742561 its reverse (165247107321), we get a palindrome (288948849882).

The spelling of 123701742561 in words is "one hundred twenty-three billion, seven hundred one million, seven hundred forty-two thousand, five hundred sixty-one".