123630146 has 4 divisors (see below), whose sum is σ = 185445222. Its totient is φ = 61815072.

The previous prime is 123630097. The next prime is 123630149. The reversal of 123630146 is 641036321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 641036321 = 31 ⋅20678591.

It can be written as a sum of positive squares in only one way, i.e., 122965921 + 664225 = 11089^2 + 815^2 .

It is not an unprimeable number, because it can be changed into a prime (123630149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30907535 + ... + 30907538.

Almost surely, 2^123630146 is an apocalyptic number.

123630146 is a deficient number, since it is larger than the sum of its proper divisors (61815076).

123630146 is an equidigital number, since it uses as much as digits as its factorization.

123630146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61815075.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 123630146 is about 11118.9093889644. The cubic root of 123630146 is about 498.1668150802.

Adding to 123630146 its reverse (641036321), we get a palindrome (764666467).

The spelling of 123630146 in words is "one hundred twenty-three million, six hundred thirty thousand, one hundred forty-six".