1423042442 has 4 divisors (see below), whose sum is σ = 2134563666. Its totient is φ = 711521220.

The previous prime is 1423042399. The next prime is 1423042451. The reversal of 1423042442 is 2442403241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2442403241 = 19 ⋅128547539.

It can be written as a sum of positive squares in only one way, i.e., 1355786041 + 67256401 = 36821^2 + 8201^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355760609 + ... + 355760612.

Almost surely, 2^1423042442 is an apocalyptic number.

1423042442 is a deficient number, since it is larger than the sum of its proper divisors (711521224).

1423042442 is an equidigital number, since it uses as much as digits as its factorization.

1423042442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711521223.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 1423042442 is about 37723.2347764610. The cubic root of 1423042442 is about 1124.7930330705.

Adding to 1423042442 its reverse (2442403241), we get a palindrome (3865445683).

The spelling of 1423042442 in words is "one billion, four hundred twenty-three million, forty-two thousand, four hundred forty-two".