42086772 has 144 divisors (see below), whose sum is σ = 135757440. Its totient is φ = 10692864.

The previous prime is 42086771. The next prime is 42086777. The reversal of 42086772 is 27768024.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42086771) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94783 + ... + 95225.

It is an arithmetic number, because the mean of its divisors is an integer number (942760).

Almost surely, 2^42086772 is an apocalyptic number.

42086772 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42086772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67878720).

42086772 is an abundant number, since it is smaller than the sum of its proper divisors (93670668).

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

42086772 is a wasteful number, since it uses less digits than its factorization.

42086772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 42086772 is about 6487.4318493530. The cubic root of 42086772 is about 347.8418821912.

The spelling of 42086772 in words is "forty-two million, eighty-six thousand, seven hundred seventy-two".