42778662 has 16 divisors (see below), whose sum is σ = 87644592. Its totient is φ = 13911680.

The previous prime is 42778627. The next prime is 42778663. The reversal of 42778662 is 26687724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42778663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86703 + ... + 87194.

It is an arithmetic number, because the mean of its divisors is an integer number (5477787).

Almost surely, 2^42778662 is an apocalyptic number.

42778662 is an abundant number, since it is smaller than the sum of its proper divisors (44865930).

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

42778662 is a wasteful number, since it uses less digits than its factorization.

42778662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173943.

The product of its digits is 225792, while the sum is 42.

The square root of 42778662 is about 6540.5398859727. The cubic root of 42778662 is about 349.7376591952.

The spelling of 42778662 in words is "forty-two million, seven hundred seventy-eight thousand, six hundred sixty-two".