40144002 has 32 divisors (see below), whose sum is σ = 83825280. Its totient is φ = 12804480.

The previous prime is 40143991. The next prime is 40144003. The reversal of 40144002 is 20044104.

It is a super-2 number, since 2×40144002² = 3223081793152008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40144003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11499 + ... + 14577.

It is an arithmetic number, because the mean of its divisors is an integer number (2619540).

Almost surely, 2^40144002 is an apocalyptic number.

40144002 is an abundant number, since it is smaller than the sum of its proper divisors (43681278).

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

40144002 is a wasteful number, since it uses less digits than its factorization.

40144002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 40144002 is about 6335.9294503648. The cubic root of 40144002 is about 342.4050977583.

Adding to 40144002 its reverse (20044104), we get a palindrome (60188106).

The spelling of 40144002 in words is "forty million, one hundred forty-four thousand, two".