10242420 has 24 divisors (see below), whose sum is σ = 28678944. Its totient is φ = 2731296.

The previous prime is 10242391. The next prime is 10242437. The reversal of 10242420 is 2424201.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 10242420.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 85294 + ... + 85413.

It is an arithmetic number, because the mean of its divisors is an integer number (1194956).

Almost surely, 2^10242420 is an apocalyptic number.

10242420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10242420 is an abundant number, since it is smaller than the sum of its proper divisors (18436524).

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

10242420 is a wasteful number, since it uses less digits than its factorization.

10242420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170719 (or 170717 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 10242420 is about 3200.3781026622. The cubic root of 10242420 is about 217.1705144662.

Adding to 10242420 its reverse (2424201), we get a palindrome (12666621).

The spelling of 10242420 in words is "ten million, two hundred forty-two thousand, four hundred twenty".