10140040 has 16 divisors (see below), whose sum is σ = 22815180. Its totient is φ = 4056000.

The previous prime is 10140029. The next prime is 10140047. The reversal of 10140040 is 4004101.

It can be written as a sum of positive squares in 2 ways, for example, as 9647236 + 492804 = 3106^2 + 702^2 .

It is a super-2 number, since 2×10140040² = 205640822403200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 10139999 and 10140026.

It is not an unprimeable number, because it can be changed into a prime (10140047) 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 3 ways as a sum of consecutive naturals, for example, 126711 + ... + 126790.

Almost surely, 2^10140040 is an apocalyptic number.

10140040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10140040 is an abundant number, since it is smaller than the sum of its proper divisors (12675140).

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

10140040 is a wasteful number, since it uses less digits than its factorization.

10140040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253512 (or 253508 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 10140040 is about 3184.3429463549. The cubic root of 10140040 is about 216.4445007412. Note that the first 3 decimals are identical.

Adding to 10140040 its reverse (4004101), we get a palindrome (14144141).

The spelling of 10140040 in words is "ten million, one hundred forty thousand, forty".