1235123545105 has 8 divisors (see below), whose sum is σ = 1482658828992. Its totient is φ = 987758452848.

The previous prime is 1235123545079. The next prime is 1235123545147. The reversal of 1235123545105 is 5015453215321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1235123545105 is a prime.

It is a super-2 number, since 2×1235123545105² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42531939 + ... + 42560968.

It is an arithmetic number, because the mean of its divisors is an integer number (185332353624).

Almost surely, 2^{1235123545105} is an apocalyptic number.

It is an amenable number.

1235123545105 is a deficient number, since it is larger than the sum of its proper divisors (247535283887).

1235123545105 is an equidigital number, since it uses as much as digits as its factorization.

1235123545105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85095815.

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 1235123545105 in words is "one trillion, two hundred thirty-five billion, one hundred twenty-three million, five hundred forty-five thousand, one hundred five".