123470472145 has 4 divisors (see below), whose sum is σ = 148164566580. Its totient is φ = 98776377712.

The previous prime is 123470472079. The next prime is 123470472149. The reversal of 123470472145 is 541274074321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24999404544 + 98471067601 = 158112^2 + 313801^2 .

It is a cyclic number.

It is not a de Polignac number, because 123470472145 - 2¹³ = 123470463953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123470472098 and 123470472107.

It is not an unprimeable number, because it can be changed into a prime (123470472149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12347047210 + ... + 12347047219.

It is an arithmetic number, because the mean of its divisors is an integer number (37041141645).

Almost surely, 2^123470472145 is an apocalyptic number.

It is an amenable number.

123470472145 is a deficient number, since it is larger than the sum of its proper divisors (24694094435).

123470472145 is an equidigital number, since it uses as much as digits as its factorization.

123470472145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24694094434.

The product of its (nonzero) digits is 188160, while the sum is 40.

The spelling of 123470472145 in words is "one hundred twenty-three billion, four hundred seventy million, four hundred seventy-two thousand, one hundred forty-five".