42530755 has 8 divisors (see below), whose sum is σ = 51220224. Its totient is φ = 33902400.

The previous prime is 42530743. The next prime is 42530779. The reversal of 42530755 is 55703524.

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

It is a de Polignac number, because none of the positive numbers 2^k-42530755 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13731 + ... + 16540.

It is an arithmetic number, because the mean of its divisors is an integer number (6402528).

Almost surely, 2^42530755 is an apocalyptic number.

42530755 is a deficient number, since it is larger than the sum of its proper divisors (8689469).

42530755 is a wasteful number, since it uses less digits than its factorization.

42530755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30557.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 42530755 is about 6521.5607794454. The cubic root of 42530755 is about 349.0607606790.

The spelling of 42530755 in words is "forty-two million, five hundred thirty thousand, seven hundred fifty-five".