10420140 has 24 divisors (see below), whose sum is σ = 29176560. Its totient is φ = 2778688.

The previous prime is 10420139. The next prime is 10420153. The reversal of 10420140 is 4102401.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86775 + ... + 86894.

It is an arithmetic number, because the mean of its divisors is an integer number (1215690).

Almost surely, 2^10420140 is an apocalyptic number.

10420140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10420140 is an abundant number, since it is smaller than the sum of its proper divisors (18756420).

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

10420140 is a wasteful number, since it uses less digits than its factorization.

10420140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173681 (or 173679 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 10420140 is about 3228.0241634783. The cubic root of 10420140 is about 218.4193873758.

Adding to 10420140 its reverse (4102401), we get a palindrome (14522541).

The spelling of 10420140 in words is "ten million, four hundred twenty thousand, one hundred forty".