424202421 has 8 divisors (see below), whose sum is σ = 566434080. Its totient is φ = 282386192.

The previous prime is 424202413. The next prime is 424202423. The reversal of 424202421 is 124202424.

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 424202421 - 2³ = 424202413 is a prime.

It is a super-2 number, since 2×424202421² = 359895387964522482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424202423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101466 + ... + 105563.

It is an arithmetic number, because the mean of its divisors is an integer number (70804260).

Almost surely, 2^424202421 is an apocalyptic number.

It is an amenable number.

424202421 is a deficient number, since it is larger than the sum of its proper divisors (142231659).

424202421 is a wasteful number, since it uses less digits than its factorization.

424202421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207715.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 424202421 is about 20596.1749118617. The cubic root of 424202421 is about 751.3766838869.

Adding to 424202421 its reverse (124202424), we get a palindrome (548404845).

The spelling of 424202421 in words is "four hundred twenty-four million, two hundred two thousand, four hundred twenty-one".