123135235476 has 24 divisors (see below), whose sum is σ = 313435145184. Its totient is φ = 37313707680.

The previous prime is 123135235471. The next prime is 123135235481. The reversal of 123135235476 is 674532531321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (123135235471) and next prime (123135235481).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123135235471) 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, 466421215 + ... + 466421478.

It is an arithmetic number, because the mean of its divisors is an integer number (13059797716).

Almost surely, 2^123135235476 is an apocalyptic number.

It is an amenable number.

123135235476 is an abundant number, since it is smaller than the sum of its proper divisors (190299909708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123135235476 is a wasteful number, since it uses less digits than its factorization.

123135235476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932842711 (or 932842709 counting only the distinct ones).

The product of its digits is 453600, while the sum is 42.

Adding to 123135235476 its reverse (674532531321), we get a palindrome (797667766797).

The spelling of 123135235476 in words is "one hundred twenty-three billion, one hundred thirty-five million, two hundred thirty-five thousand, four hundred seventy-six".