440142403530 has 64 divisors (see below), whose sum is σ = 1079287607808. Its totient is φ = 114823948800.

The previous prime is 440142403529. The next prime is 440142403531. The reversal of 440142403530 is 35304241044.

It is an interprime number because it is at equal distance from previous prime (440142403529) and next prime (440142403531).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (440142403531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3222630 + ... + 3356430.

It is an arithmetic number, because the mean of its divisors is an integer number (16863868872).

Almost surely, 2^440142403530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440142403530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (539643803904).

440142403530 is an abundant number, since it is smaller than the sum of its proper divisors (639145204278).

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

440142403530 is a wasteful number, since it uses less digits than its factorization.

440142403530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136191.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 440142403530 its reverse (35304241044), we get a palindrome (475446644574).

The spelling of 440142403530 in words is "four hundred forty billion, one hundred forty-two million, four hundred three thousand, five hundred thirty".