42143456 has 12 divisors (see below), whose sum is σ = 82969992. Its totient is φ = 21071712.

The previous prime is 42143447. The next prime is 42143471. The reversal of 42143456 is 65434124.

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, 658460 + ... + 658523.

It is an arithmetic number, because the mean of its divisors is an integer number (6914166).

Almost surely, 2^42143456 is an apocalyptic number.

It is an amenable number.

42143456 is a deficient number, since it is larger than the sum of its proper divisors (40826536).

42143456 is a wasteful number, since it uses less digits than its factorization.

42143456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316993 (or 1316985 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 42143456 is about 6491.7991342924. The cubic root of 42143456 is about 347.9979741812.

The spelling of 42143456 in words is "forty-two million, one hundred forty-three thousand, four hundred fifty-six".