42920086 has 8 divisors (see below), whose sum is σ = 70232904. Its totient is φ = 19509120.

The previous prime is 42920077. The next prime is 42920113. The reversal of 42920086 is 68002924.

42920086 = T₂₇₈₈ + T₂₇₈₉ + ... + T₂₇₉₈.

42920086 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.

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, 975435 + ... + 975478.

It is an arithmetic number, because the mean of its divisors is an integer number (8779113).

Almost surely, 2^42920086 is an apocalyptic number.

42920086 is a deficient number, since it is larger than the sum of its proper divisors (27312818).

42920086 is a wasteful number, since it uses less digits than its factorization.

42920086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950926.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 42920086 is about 6551.3423052074. The cubic root of 42920086 is about 350.1226400151.

The spelling of 42920086 in words is "forty-two million, nine hundred twenty thousand, eighty-six".