42156416 has 16 divisors (see below), whose sum is σ = 83983740. Its totient is φ = 21078144.

The previous prime is 42156409. The next prime is 42156419. The reversal of 42156416 is 61465124.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42156419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164546 + ... + 164801.

Almost surely, 2^42156416 is an apocalyptic number.

It is an amenable number.

42156416 is a deficient number, since it is larger than the sum of its proper divisors (41827324).

42156416 is an equidigital number, since it uses as much as digits as its factorization.

42156416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329361 (or 329349 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 42156416 is about 6492.7972400191. The cubic root of 42156416 is about 348.0336427597.

The spelling of 42156416 in words is "forty-two million, one hundred fifty-six thousand, four hundred sixteen".