1421555412 has 24 divisors (see below), whose sum is σ = 3328691296. Its totient is φ = 472176288.

The previous prime is 1421555393. The next prime is 1421555441. The reversal of 1421555412 is 2145551241.

It is a self number, because there is not a number n which added to its sum of digits gives 1421555412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205903 + ... + 212694.

Almost surely, 2^1421555412 is an apocalyptic number.

1421555412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1421555412 is an abundant number, since it is smaller than the sum of its proper divisors (1907135884).

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

1421555412 is a wasteful number, since it uses less digits than its factorization.

1421555412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418887 (or 418885 counting only the distinct ones).

The product of its digits is 8000, while the sum is 30.

The square root of 1421555412 is about 37703.5198887319. The cubic root of 1421555412 is about 1124.4011066186.

The spelling of 1421555412 in words is "one billion, four hundred twenty-one million, five hundred fifty-five thousand, four hundred twelve".