42661974 has 8 divisors (see below), whose sum is σ = 85323960. Its totient is φ = 14220656.

The previous prime is 42661963. The next prime is 42661981. The reversal of 42661974 is 47916624.

It is a happy number.

42661974 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

42661974 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3555159 + ... + 3555170.

It is an arithmetic number, because the mean of its divisors is an integer number (10665495).

Almost surely, 2^42661974 is an apocalyptic number.

42661974 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42661974 is a wasteful number, since it uses less digits than its factorization.

42661974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7110334.

The product of its digits is 72576, while the sum is 39.

The square root of 42661974 is about 6531.6134300799. The cubic root of 42661974 is about 349.4193747313.

The spelling of 42661974 in words is "forty-two million, six hundred sixty-one thousand, nine hundred seventy-four".