424140421 has 8 divisors (see below), whose sum is σ = 428025024. Its totient is φ = 420272160.

The previous prime is 424140413. The next prime is 424140469. The reversal of 424140421 is 124041424.

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 424140421 - 2³ = 424140413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 424140392 and 424140401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424140221) 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, 51441 + ... + 59113.

It is an arithmetic number, because the mean of its divisors is an integer number (53503128).

Almost surely, 2^424140421 is an apocalyptic number.

It is an amenable number.

424140421 is a deficient number, since it is larger than the sum of its proper divisors (3884603).

424140421 is a wasteful number, since it uses less digits than its factorization.

424140421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8171.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 424140421 is about 20594.6697230133. The cubic root of 424140421 is about 751.3400758732.

Adding to 424140421 its reverse (124041424), we get a palindrome (548181845).

The spelling of 424140421 in words is "four hundred twenty-four million, one hundred forty thousand, four hundred twenty-one".