42646534 has 16 divisors (see below), whose sum is σ = 73302048. Its totient is φ = 18228672.

The previous prime is 42646529. The next prime is 42646537. The reversal of 42646534 is 43564624.

It is a self number, because there is not a number n which added to its sum of digits gives 42646534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42646537) 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 in 7 ways as a sum of consecutive naturals, for example, 1722 + ... + 9394.

It is an arithmetic number, because the mean of its divisors is an integer number (4581378).

Almost surely, 2^42646534 is an apocalyptic number.

42646534 is a deficient number, since it is larger than the sum of its proper divisors (30655514).

42646534 is a wasteful number, since it uses less digits than its factorization.

42646534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8079.

The product of its digits is 69120, while the sum is 34.

The square root of 42646534 is about 6530.4313793194. The cubic root of 42646534 is about 349.3772162967.

The spelling of 42646534 in words is "forty-two million, six hundred forty-six thousand, five hundred thirty-four".