10420040 has 32 divisors (see below), whose sum is σ = 23545080. Its totient is φ = 4150272.

The previous prime is 10420009. The next prime is 10420079. The reversal of 10420040 is 4002401.

10420040 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in 4 ways, for example, as 4553956 + 5866084 = 2134^2 + 2422^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13094 + ... + 13866.

Almost surely, 2^10420040 is an apocalyptic number.

10420040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10420040 is an abundant number, since it is smaller than the sum of its proper divisors (13125040).

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

10420040 is a wasteful number, since it uses less digits than its factorization.

10420040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121 (or 1117 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 10420040 is about 3228.0086740900. The cubic root of 10420040 is about 218.4186886645.

Adding to 10420040 its reverse (4002401), we get a palindrome (14422441).

The spelling of 10420040 in words is "ten million, four hundred twenty thousand, forty".