42071436 has 72 divisors (see below), whose sum is σ = 117044928. Its totient is φ = 12636000.

The previous prime is 42071399. The next prime is 42071461. The reversal of 42071436 is 63417024.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

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, 51471 + ... + 52281.

It is an arithmetic number, because the mean of its divisors is an integer number (1625624).

Almost surely, 2^42071436 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 42071436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58522464).

42071436 is an abundant number, since it is smaller than the sum of its proper divisors (74973492).

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

42071436 is a wasteful number, since it uses less digits than its factorization.

42071436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 42071436 is about 6486.2497639237. The cubic root of 42071436 is about 347.7996270207.

The spelling of 42071436 in words is "forty-two million, seventy-one thousand, four hundred thirty-six".