42920782 has 4 divisors (see below), whose sum is σ = 64381176. Its totient is φ = 21460390.

The previous prime is 42920743. The next prime is 42920819. The reversal of 42920782 is 28702924.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10730194 + ... + 10730197.

It is an arithmetic number, because the mean of its divisors is an integer number (16095294).

Almost surely, 2^42920782 is an apocalyptic number.

42920782 is a deficient number, since it is larger than the sum of its proper divisors (21460394).

42920782 is a wasteful number, since it uses less digits than its factorization.

42920782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21460393.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 42920782 is about 6551.3954238773. The cubic root of 42920782 is about 350.1245325559.

The spelling of 42920782 in words is "forty-two million, nine hundred twenty thousand, seven hundred eighty-two".