10402140340 has 24 divisors (see below), whose sum is σ = 22377289032. Its totient is φ = 4059371520.

The previous prime is 10402140337. The next prime is 10402140341. The reversal of 10402140340 is 4304120401.

It can be written as a sum of positive squares in 4 ways, for example, as 1402202916 + 8999937424 = 37446^2 + 94868^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10402140341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6341949 + ... + 6343588.

It is an arithmetic number, because the mean of its divisors is an integer number (932387043).

Almost surely, 2^10402140340 is an apocalyptic number.

10402140340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10402140340 is an abundant number, since it is smaller than the sum of its proper divisors (11975148692).

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

10402140340 is a wasteful number, since it uses less digits than its factorization.

10402140340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12685587 (or 12685585 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 10402140340 its reverse (4304120401), we get a palindrome (14706260741).

The spelling of 10402140340 in words is "ten billion, four hundred two million, one hundred forty thousand, three hundred forty".