10402044140 has 24 divisors (see below), whose sum is σ = 21868957152. Its totient is φ = 4156119680.

The previous prime is 10402044131. The next prime is 10402044143. The reversal of 10402044140 is 4144020401.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (10402044143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275441 + ... + 310920.

It is an arithmetic number, because the mean of its divisors is an integer number (911206548).

Almost surely, 2^10402044140 is an apocalyptic number.

10402044140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10402044140 is an abundant number, since it is smaller than the sum of its proper divisors (11466913012).

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

10402044140 is a wasteful number, since it uses less digits than its factorization.

10402044140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587257 (or 587255 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 10402044140 its reverse (4144020401), we get a palindrome (14546064541).

The spelling of 10402044140 in words is "ten billion, four hundred two million, forty-four thousand, one hundred forty".