42555976 has 8 divisors (see below), whose sum is σ = 79792470. Its totient is φ = 21277984.

The previous prime is 42555971. The next prime is 42555977. The reversal of 42555976 is 67955524.

It can be written as a sum of positive squares in only one way, i.e., 32148900 + 10407076 = 5670^2 + 3226^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×42555976² = 3622022186625152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42555971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2659741 + ... + 2659756.

Almost surely, 2^42555976 is an apocalyptic number.

It is an amenable number.

42555976 is a deficient number, since it is larger than the sum of its proper divisors (37236494).

42555976 is a wasteful number, since it uses less digits than its factorization.

42555976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5319503 (or 5319499 counting only the distinct ones).

The product of its digits is 378000, while the sum is 43.

The square root of 42555976 is about 6523.4941557420. The cubic root of 42555976 is about 349.1297454393.

The spelling of 42555976 in words is "forty-two million, five hundred fifty-five thousand, nine hundred seventy-six".