42497416 has 72 divisors (see below), whose sum is σ = 93533130. Its totient is φ = 18031104.

The previous prime is 42497393. The next prime is 42497417. The reversal of 42497416 is 61479424.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 27520516 + 14976900 = 5246^2 + 3870^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42497417) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 988291 + ... + 988333.

Almost surely, 2^42497416 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 42497416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46766565).

42497416 is an abundant number, since it is smaller than the sum of its proper divisors (51035714).

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

42497416 is a wasteful number, since it uses less digits than its factorization.

42497416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 75 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 42497416 is about 6519.0042184370. The cubic root of 42497416 is about 348.9695296096.

The spelling of 42497416 in words is "forty-two million, four hundred ninety-seven thousand, four hundred sixteen".