10242440 has 32 divisors (see below), whose sum is σ = 24819480. Its totient is φ = 3781632.

The previous prime is 10242439. The next prime is 10242461. The reversal of 10242440 is 4424201.

It can be written as a sum of positive squares in 4 ways, for example, as 4318084 + 5924356 = 2078^2 + 2434^2 .

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, 9329 + ... + 10368.

Almost surely, 2^10242440 is an apocalyptic number.

10242440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10242440 is an abundant number, since it is smaller than the sum of its proper divisors (14577040).

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

10242440 is a wasteful number, since it uses less digits than its factorization.

10242440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19721 (or 19717 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 10242440 is about 3200.3812272915. The cubic root of 10242440 is about 217.1706558198.

Adding to 10242440 its reverse (4424201), we get a palindrome (14666641).

The spelling of 10242440 in words is "ten million, two hundred forty-two thousand, four hundred forty".