42690834 has 32 divisors (see below), whose sum is σ = 99864000. Its totient is φ = 13480992.

The previous prime is 42690827. The next prime is 42690839. The reversal of 42690834 is 43809624.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42690839) 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 15 ways as a sum of consecutive naturals, for example, 19779 + ... + 21830.

It is an arithmetic number, because the mean of its divisors is an integer number (3120750).

Almost surely, 2^42690834 is an apocalyptic number.

42690834 is an abundant number, since it is smaller than the sum of its proper divisors (57173166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42690834 is a wasteful number, since it uses less digits than its factorization.

42690834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41639 (or 41633 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 42690834 is about 6533.8223116335. The cubic root of 42690834 is about 349.4981487865.

The spelling of 42690834 in words is "forty-two million, six hundred ninety thousand, eight hundred thirty-four".