42557776 has 10 divisors (see below), whose sum is σ = 82455722. Its totient is φ = 21278880.

The previous prime is 42557747. The next prime is 42557791. The reversal of 42557776 is 67775524.

It can be written as a sum of positive squares in only one way, i.e., 40653376 + 1904400 = 6376^2 + 1380^2 .

It is a super-2 number, since 2×42557776² = 3622328596132352, which contains 22 as substring.

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, 1329915 + ... + 1329946.

Almost surely, 2^42557776 is an apocalyptic number.

It is an amenable number.

42557776 is a deficient number, since it is larger than the sum of its proper divisors (39897946).

42557776 is a wasteful number, since it uses less digits than its factorization.

42557776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659869 (or 2659863 counting only the distinct ones).

The product of its digits is 411600, while the sum is 43.

The square root of 42557776 is about 6523.6321171568. The cubic root of 42557776 is about 349.1346677772.

The spelling of 42557776 in words is "forty-two million, five hundred fifty-seven thousand, seven hundred seventy-six".