1215420414 has 64 divisors (see below), whose sum is σ = 2687731200. Its totient is φ = 364113792.

The previous prime is 1215420403. The next prime is 1215420439. The reversal of 1215420414 is 4140245121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 500407 + ... + 502829.

It is an arithmetic number, because the mean of its divisors is an integer number (41995800).

Almost surely, 2^1215420414 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1215420414, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1343865600).

1215420414 is an abundant number, since it is smaller than the sum of its proper divisors (1472310786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1215420414 is a wasteful number, since it uses less digits than its factorization.

1215420414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2609.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 1215420414 is about 34862.8801736173. The cubic root of 1215420414 is about 1067.1910526885.

Adding to 1215420414 its reverse (4140245121), we get a palindrome (5355665535).

The spelling of 1215420414 in words is "one billion, two hundred fifteen million, four hundred twenty thousand, four hundred fourteen".