42555530 has 8 divisors (see below), whose sum is σ = 76599972. Its totient is φ = 17022208.

The previous prime is 42555523. The next prime is 42555571. The reversal of 42555530 is 3555524.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42393121 + 162409 = 6511^2 + 403^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 42555493 and 42555502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2127767 + ... + 2127786.

Almost surely, 2^42555530 is an apocalyptic number.

42555530 is a deficient number, since it is larger than the sum of its proper divisors (34044442).

42555530 is a wasteful number, since it uses less digits than its factorization.

42555530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4255560.

The product of its (nonzero) digits is 15000, while the sum is 29.

The square root of 42555530 is about 6523.4599715182. The cubic root of 42555530 is about 349.1285257719.

It can be divided in two parts, 425 and 55530, that added together give a palindrome (55955).

The spelling of 42555530 in words is "forty-two million, five hundred fifty-five thousand, five hundred thirty".