124042042 has 4 divisors (see below), whose sum is σ = 186063066. Its totient is φ = 62021020.

The previous prime is 124042027. The next prime is 124042063. The reversal of 124042042 is 240240421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240240421 = 31 ⋅7749691.

It can be written as a sum of positive squares in only one way, i.e., 112338801 + 11703241 = 10599^2 + 3421^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31010509 + ... + 31010512.

Almost surely, 2^124042042 is an apocalyptic number.

124042042 is a deficient number, since it is larger than the sum of its proper divisors (62021024).

124042042 is an equidigital number, since it uses as much as digits as its factorization.

124042042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62021023.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 124042042 is about 11137.4163072052. The cubic root of 124042042 is about 498.7194458285.

Adding to 124042042 its reverse (240240421), we get a palindrome (364282463).

The spelling of 124042042 in words is "one hundred twenty-four million, forty-two thousand, forty-two".