40134144 has 160 divisors (see below), whose sum is σ = 119322720. Its totient is φ = 11927552.

The previous prime is 40134113. The next prime is 40134169. The reversal of 40134144 is 44143104.

It is a super-2 number, since 2×40134144² = 3221499029225472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40134144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 757222 + ... + 757274.

It is an arithmetic number, because the mean of its divisors is an integer number (745767).

Almost surely, 2^40134144 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 40134144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59661360).

40134144 is an abundant number, since it is smaller than the sum of its proper divisors (79188576).

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

40134144 is a wasteful number, since it uses less digits than its factorization.

40134144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 40134144 is about 6335.1514583315. The cubic root of 40134144 is about 342.3770677861.

Adding to 40134144 its reverse (44143104), we get a palindrome (84277248).

The spelling of 40134144 in words is "forty million, one hundred thirty-four thousand, one hundred forty-four".