42634534 has 4 divisors (see below), whose sum is σ = 63951804. Its totient is φ = 21317266.

The previous prime is 42634531. The next prime is 42634541. The reversal of 42634534 is 43543624.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 42634496 and 42634505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42634531) by changing a digit.

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, 10658632 + ... + 10658635.

It is an arithmetic number, because the mean of its divisors is an integer number (15987951).

Almost surely, 2^42634534 is an apocalyptic number.

42634534 is a deficient number, since it is larger than the sum of its proper divisors (21317270).

42634534 is a wasteful number, since it uses less digits than its factorization.

42634534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21317269.

The product of its digits is 34560, while the sum is 31.

The square root of 42634534 is about 6529.5125392329. The cubic root of 42634534 is about 349.3444436460.

The spelling of 42634534 in words is "forty-two million, six hundred thirty-four thousand, five hundred thirty-four".