1214565420 has 24 divisors (see below), whose sum is σ = 3400783344. Its totient is φ = 323884096.

The previous prime is 1214565383. The next prime is 1214565491. The reversal of 1214565420 is 245654121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10121319 + ... + 10121438.

It is an arithmetic number, because the mean of its divisors is an integer number (141699306).

Almost surely, 2^1214565420 is an apocalyptic number.

1214565420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1214565420 is an abundant number, since it is smaller than the sum of its proper divisors (2186217924).

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

1214565420 is a wasteful number, since it uses less digits than its factorization.

1214565420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20242769 (or 20242767 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 1214565420 is about 34850.6157764823. The cubic root of 1214565420 is about 1066.9407535673.

The spelling of 1214565420 in words is "one billion, two hundred fourteen million, five hundred sixty-five thousand, four hundred twenty".