42690870 has 24 divisors (see below), whose sum is σ = 110996496. Its totient is φ = 11384208.

The previous prime is 42690863. The next prime is 42690883. The reversal of 42690870 is 7809624.

42690870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11 ways as a sum of consecutive naturals, for example, 237082 + ... + 237261.

It is an arithmetic number, because the mean of its divisors is an integer number (4624854).

Almost surely, 2^42690870 is an apocalyptic number.

42690870 is an abundant number, since it is smaller than the sum of its proper divisors (68305626).

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

42690870 is a wasteful number, since it uses less digits than its factorization.

42690870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474356 (or 474353 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 42690870 is about 6533.8250665288. The cubic root of 42690870 is about 349.4982470271.

The spelling of 42690870 in words is "forty-two million, six hundred ninety thousand, eight hundred seventy".