34202421 has 12 divisors (see below), whose sum is σ = 53894880. Its totient is φ = 20728680.

The previous prime is 34202411. The next prime is 34202431. The reversal of 34202421 is 12420243.

34202421 is a `hidden beast` number, since 3 + 420 + 242 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (34202411) and next prime (34202431).

It is not a de Polignac number, because 34202421 - 2¹⁹ = 33678133 is a prime.

It is a super-2 number, since 2×34202421² = 2339611204522482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 34202394 and 34202403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34202411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172641 + ... + 172838.

It is an arithmetic number, because the mean of its divisors is an integer number (4491240).

Almost surely, 2^34202421 is an apocalyptic number.

It is an amenable number.

34202421 is a deficient number, since it is larger than the sum of its proper divisors (19692459).

34202421 is a wasteful number, since it uses less digits than its factorization.

34202421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345496 (or 345493 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 34202421 is about 5848.2835943548. The cubic root of 34202421 is about 324.6028157830.

Adding to 34202421 its reverse (12420243), we get a palindrome (46622664).

It can be divided in two parts, 3420242 and 1, that added together give a palindrome (3420243).

The spelling of 34202421 in words is "thirty-four million, two hundred two thousand, four hundred twenty-one".