123460945 has 4 divisors (see below), whose sum is σ = 148153140. Its totient is φ = 98768752.

The previous prime is 123460943. The next prime is 123460951. The reversal of 123460945 is 549064321.

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 75186241 + 48274704 = 8671^2 + 6948^2 .

It is a cyclic number.

It is not a de Polignac number, because 123460945 - 2¹ = 123460943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123460945.

It is not an unprimeable number, because it can be changed into a prime (123460943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12346090 + ... + 12346099.

It is an arithmetic number, because the mean of its divisors is an integer number (37038285).

Almost surely, 2^123460945 is an apocalyptic number.

It is an amenable number.

123460945 is a deficient number, since it is larger than the sum of its proper divisors (24692195).

123460945 is an equidigital number, since it uses as much as digits as its factorization.

123460945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24692194.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 123460945 is about 11111.2980789825. The cubic root of 123460945 is about 497.9394465710.

The spelling of 123460945 in words is "one hundred twenty-three million, four hundred sixty thousand, nine hundred forty-five".