215034421 has 8 divisors (see below), whose sum is σ = 249120704. Its totient is φ = 181789920.

The previous prime is 215034397. The next prime is 215034427. The reversal of 215034421 is 124430512.

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 215034421 - 2¹⁵ = 215001653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215034392 and 215034401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215034427) 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, 209895 + ... + 210916.

It is an arithmetic number, because the mean of its divisors is an integer number (31140088).

Almost surely, 2^215034421 is an apocalyptic number.

It is an amenable number.

215034421 is a deficient number, since it is larger than the sum of its proper divisors (34086283).

215034421 is an equidigital number, since it uses as much as digits as its factorization.

215034421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420891.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 215034421 is about 14664.0519979984. The cubic root of 215034421 is about 599.1046098291.

Adding to 215034421 its reverse (124430512), we get a palindrome (339464933).

The spelling of 215034421 in words is "two hundred fifteen million, thirty-four thousand, four hundred twenty-one".