40063842 has 128 divisors (see below), whose sum is σ = 113541120. Its totient is φ = 10186560.

The previous prime is 40063759. The next prime is 40063843. The reversal of 40063842 is 24836004.

40063842 is nontrivially palindromic in base 16.

It is a super-2 number, since 2×40063842² = 3210222871601928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40063843) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 152203 + ... + 152465.

It is an arithmetic number, because the mean of its divisors is an integer number (887040).

Almost surely, 2^40063842 is an apocalyptic number.

40063842 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 40063842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56770560).

40063842 is an abundant number, since it is smaller than the sum of its proper divisors (73477278).

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

40063842 is a wasteful number, since it uses less digits than its factorization.

40063842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 40063842 is about 6329.6004613246. The cubic root of 40063842 is about 342.1770397628.

Adding to 40063842 its reverse (24836004), we get a palindrome (64899846).

The spelling of 40063842 in words is "forty million, sixty-three thousand, eight hundred forty-two".