13942837940 has 24 divisors (see below), whose sum is σ = 29681058120. Its totient is φ = 5500735488.

The previous prime is 13942837903. The next prime is 13942837949. The reversal of 13942837940 is 4973824931.

It can be written as a sum of positive squares in 4 ways, for example, as 6091024 + 13936746916 = 2468^2 + 118054^2 .

It is a super-2 number, since 2×13942837940² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13942837949) 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 7 ways as a sum of consecutive naturals, for example, 4773485 + ... + 4776404.

It is an arithmetic number, because the mean of its divisors is an integer number (1236710755).

Almost surely, 2^13942837940 is an apocalyptic number.

13942837940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13942837940 is an abundant number, since it is smaller than the sum of its proper divisors (15738220180).

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

13942837940 is a wasteful number, since it uses less digits than its factorization.

13942837940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9549971 (or 9549969 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 13942837940 in words is "thirteen billion, nine hundred forty-two million, eight hundred thirty-seven thousand, nine hundred forty".