123641004 has 24 divisors (see below), whose sum is σ = 292149760. Its totient is φ = 40691664.

The previous prime is 123641003. The next prime is 123641009. The reversal of 123641004 is 400146321.

It is not an unprimeable number, because it can be changed into a prime (123641003) 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, 64264 + ... + 66159.

Almost surely, 2^123641004 is an apocalyptic number.

It is an amenable number.

123641004 is an abundant number, since it is smaller than the sum of its proper divisors (168508756).

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

123641004 is a wasteful number, since it uses less digits than its factorization.

123641004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130509 (or 130507 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 123641004 is about 11119.3976455562. The cubic root of 123641004 is about 498.1813987318.

Adding to 123641004 its reverse (400146321), we get a palindrome (523787325).

The spelling of 123641004 in words is "one hundred twenty-three million, six hundred forty-one thousand, four".