42529418 has 4 divisors (see below), whose sum is σ = 63794130. Its totient is φ = 21264708.

The previous prime is 42529381. The next prime is 42529439. The reversal of 42529418 is 81492524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 26553409 + 15976009 = 5153^2 + 3997^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10632353 + ... + 10632356.

Almost surely, 2^42529418 is an apocalyptic number.

42529418 is a deficient number, since it is larger than the sum of its proper divisors (21264712).

42529418 is a wasteful number, since it uses less digits than its factorization.

42529418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21264711.

The product of its digits is 23040, while the sum is 35.

The square root of 42529418 is about 6521.4582725032. The cubic root of 42529418 is about 349.0571029406.

The spelling of 42529418 in words is "forty-two million, five hundred twenty-nine thousand, four hundred eighteen".