42142438 has 16 divisors (see below), whose sum is σ = 68601456. Its totient is φ = 19300320.

The previous prime is 42142427. The next prime is 42142453. The reversal of 42142438 is 83424124.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2781 + ... + 9592.

It is an arithmetic number, because the mean of its divisors is an integer number (4287591).

Almost surely, 2^42142438 is an apocalyptic number.

42142438 is a deficient number, since it is larger than the sum of its proper divisors (26459018).

42142438 is a wasteful number, since it uses less digits than its factorization.

42142438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12519.

The product of its digits is 6144, while the sum is 28.

The square root of 42142438 is about 6491.7207272032. The cubic root of 42142438 is about 347.9951721266.

The spelling of 42142438 in words is "forty-two million, one hundred forty-two thousand, four hundred thirty-eight".