123040004 has 6 divisors (see below), whose sum is σ = 215320014. Its totient is φ = 61520000.

The previous prime is 123040003. The next prime is 123040037. The reversal of 123040004 is 400040321.

It can be written as a sum of positive squares in only one way, i.e., 85192900 + 37847104 = 9230^2 + 6152^2 .

It is not an unprimeable number, because it can be changed into a prime (123040003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15379997 + ... + 15380004.

It is an arithmetic number, because the mean of its divisors is an integer number (35886669).

Almost surely, 2^123040004 is an apocalyptic number.

It is an amenable number.

123040004 is a deficient number, since it is larger than the sum of its proper divisors (92280010).

123040004 is a wasteful number, since it uses less digits than its factorization.

123040004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30760005 (or 30760003 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 123040004 is about 11092.3398793942. The cubic root of 123040004 is about 497.3728927907.

Adding to 123040004 its reverse (400040321), we get a palindrome (523080325).

The spelling of 123040004 in words is "one hundred twenty-three million, forty thousand, four".