1212405414 has 64 divisors (see below), whose sum is σ = 2686141440. Its totient is φ = 361760000.

The previous prime is 1212405391. The next prime is 1212405427. The reversal of 1212405414 is 4145042121.

It is a super-2 number, since 2×1212405414² = 2939853775793022792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1592794 + ... + 1593554.

It is an arithmetic number, because the mean of its divisors is an integer number (41970960).

Almost surely, 2^1212405414 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212405414, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1343070720).

1212405414 is an abundant number, since it is smaller than the sum of its proper divisors (1473736026).

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

1212405414 is a wasteful number, since it uses less digits than its factorization.

1212405414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117.

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

The square root of 1212405414 is about 34819.6124906639. The cubic root of 1212405414 is about 1066.3078890812.

Adding to 1212405414 its reverse (4145042121), we get a palindrome (5357447535).

The spelling of 1212405414 in words is "one billion, two hundred twelve million, four hundred five thousand, four hundred fourteen".