42986340 has 72 divisors (see below), whose sum is σ = 131459328. Its totient is φ = 11369280.

The previous prime is 42986297. The next prime is 42986357. The reversal of 42986340 is 4368924.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 42986295 and 42986304.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22669 + ... + 24491.

It is an arithmetic number, because the mean of its divisors is an integer number (1825824).

Almost surely, 2^42986340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42986340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65729664).

42986340 is an abundant number, since it is smaller than the sum of its proper divisors (88472988).

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

42986340 is a wasteful number, since it uses less digits than its factorization.

42986340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1969 (or 1964 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 42986340 is about 6556.3968763338. The cubic root of 42986340 is about 350.3027041116.

The spelling of 42986340 in words is "forty-two million, nine hundred eighty-six thousand, three hundred forty".