42051530 has 8 divisors (see below), whose sum is σ = 75692772. Its totient is φ = 16820608.

The previous prime is 42051517. The next prime is 42051533. The reversal of 42051530 is 3515024.

It can be written as a sum of positive squares in 2 ways, for example, as 41822089 + 229441 = 6467^2 + 479^2 .

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

It is not an unprimeable number, because it can be changed into a prime (42051533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2102567 + ... + 2102586.

Almost surely, 2^42051530 is an apocalyptic number.

42051530 is a deficient number, since it is larger than the sum of its proper divisors (33641242).

42051530 is a wasteful number, since it uses less digits than its factorization.

42051530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205160.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 42051530 is about 6484.7151055386. The cubic root of 42051530 is about 347.7447648447.

Adding to 42051530 its reverse (3515024), we get a palindrome (45566554).

The spelling of 42051530 in words is "forty-two million, fifty-one thousand, five hundred thirty".