42508834 has 4 divisors (see below), whose sum is σ = 63763254. Its totient is φ = 21254416.

The previous prime is 42508799. The next prime is 42508847. The reversal of 42508834 is 43880524.

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., 30969225 + 11539609 = 5565^2 + 3397^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42508834.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10627207 + ... + 10627210.

Almost surely, 2^42508834 is an apocalyptic number.

42508834 is a deficient number, since it is larger than the sum of its proper divisors (21254420).

42508834 is a wasteful number, since it uses less digits than its factorization.

42508834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21254419.

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 42508834 is about 6519.8799068695. The cubic root of 42508834 is about 349.0007799590. Note that the first 3 decimals are identical.

The spelling of 42508834 in words is "forty-two million, five hundred eight thousand, eight hundred thirty-four".