123542404 has 6 divisors (see below), whose sum is σ = 216199214. Its totient is φ = 61771200.

The previous prime is 123542387. The next prime is 123542411. The reversal of 123542404 is 404245321.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 92160000 + 31382404 = 9600^2 + 5602^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15442797 + ... + 15442804.

Almost surely, 2^123542404 is an apocalyptic number.

It is an amenable number.

123542404 is a deficient number, since it is larger than the sum of its proper divisors (92656810).

123542404 is a wasteful number, since it uses less digits than its factorization.

123542404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30885605 (or 30885603 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 123542404 is about 11114.9630678649. The cubic root of 123542404 is about 498.0489352621.

Adding to 123542404 its reverse (404245321), we get a palindrome (527787725).

The spelling of 123542404 in words is "one hundred twenty-three million, five hundred forty-two thousand, four hundred four".