1227342420 has 72 divisors (see below), whose sum is σ = 3770108160. Its totient is φ = 323144640.

The previous prime is 1227342409. The next prime is 1227342427. The reversal of 1227342420 is 242437221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227342427) 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 23 ways as a sum of consecutive naturals, for example, 28936 + ... + 57375.

Almost surely, 2^1227342420 is an apocalyptic number.

1227342420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1227342420 is an abundant number, since it is smaller than the sum of its proper divisors (2542765740).

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

1227342420 is a wasteful number, since it uses less digits than its factorization.

1227342420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86405 (or 86400 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 1227342420 is about 35033.4471612486. The cubic root of 1227342420 is about 1070.6690490637.

Adding to 1227342420 its reverse (242437221), we get a palindrome (1469779641).

The spelling of 1227342420 in words is "one billion, two hundred twenty-seven million, three hundred forty-two thousand, four hundred twenty".