42209976 has 32 divisors (see below), whose sum is σ = 105693840. Its totient is φ = 14047488.

The previous prime is 42209971. The next prime is 42209977. The reversal of 42209976 is 67990224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42209971) 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, 21550 + ... + 23426.

Almost surely, 2^42209976 is an apocalyptic number.

It is an amenable number.

42209976 is an abundant number, since it is smaller than the sum of its proper divisors (63483864).

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

42209976 is a wasteful number, since it uses less digits than its factorization.

42209976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823 (or 2819 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 42209976 is about 6496.9205012837. The cubic root of 42209976 is about 348.1809733828.

It can be divided in two parts, 4220 and 9976, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 42209976 in words is "forty-two million, two hundred nine thousand, nine hundred seventy-six".