42421503 has 8 divisors (see below), whose sum is σ = 56889648. Its totient is φ = 28117184.

The previous prime is 42421493. The next prime is 42421553. The reversal of 42421503 is 30512424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42421503 - 2¹⁰ = 42420479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42421503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42421553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40350 + ... + 41387.

It is an arithmetic number, because the mean of its divisors is an integer number (7111206).

Almost surely, 2^42421503 is an apocalyptic number.

42421503 is a deficient number, since it is larger than the sum of its proper divisors (14468145).

42421503 is a wasteful number, since it uses less digits than its factorization.

42421503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81913.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 42421503 is about 6513.1791776367. The cubic root of 42421503 is about 348.7616180403.

Adding to 42421503 its reverse (30512424), we get a palindrome (72933927).

It can be divided in two parts, 42421 and 503, that added together give a palindrome (42924).

The spelling of 42421503 in words is "forty-two million, four hundred twenty-one thousand, five hundred three".