42144422 has 4 divisors (see below), whose sum is σ = 63216636. Its totient is φ = 21072210.

The previous prime is 42144409. The next prime is 42144457. The reversal of 42144422 is 22444124.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10536104 + ... + 10536107.

It is an arithmetic number, because the mean of its divisors is an integer number (15804159).

Almost surely, 2^42144422 is an apocalyptic number.

42144422 is a deficient number, since it is larger than the sum of its proper divisors (21072214).

42144422 is a wasteful number, since it uses less digits than its factorization.

42144422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21072213.

The product of its digits is 2048, while the sum is 23.

The square root of 42144422 is about 6491.8735354287. The cubic root of 42144422 is about 348.0006330635. Note that the first 3 decimals are identical.

Adding to 42144422 its reverse (22444124), we get a palindrome (64588546).

The spelling of 42144422 in words is "forty-two million, one hundred forty-four thousand, four hundred twenty-two".