42000434 has 16 divisors (see below), whose sum is σ = 72553536. Its totient is φ = 17862000.

The previous prime is 42000419. The next prime is 42000457. The reversal of 42000434 is 43400024.

It is a Curzon 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, 9617 + ... + 13284.

It is an arithmetic number, because the mean of its divisors is an integer number (4534596).

Almost surely, 2^42000434 is an apocalyptic number.

42000434 is a deficient number, since it is larger than the sum of its proper divisors (30553102).

42000434 is a wasteful number, since it uses less digits than its factorization.

42000434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23041.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 42000434 is about 6480.7741821483. The cubic root of 42000434 is about 347.6038617826.

Adding to 42000434 its reverse (43400024), we get a palindrome (85400458).

The spelling of 42000434 in words is "forty-two million, four hundred thirty-four", and thus it is an aban number.