1421661150 has 288 divisors, whose sum is σ = 4752820800. Its totient is φ = 296663040.

The previous prime is 1421661133. The next prime is 1421661151. The reversal of 1421661150 is 511661241.

1421661150 is a `hidden beast` number, since 1 + 42 + 1 + 6 + 611 + 5 + 0 = 666.

It is a super-2 number, since 2×1421661150² = 4042240850838645000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421661151) by changing a digit.

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 143 ways as a sum of consecutive naturals, for example, 6101434 + ... + 6101666.

It is an arithmetic number, because the mean of its divisors is an integer number (16502850).

Almost surely, 2^1421661150 is an apocalyptic number.

1421661150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421661150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2376410400).

1421661150 is an abundant number, since it is smaller than the sum of its proper divisors (3331159650).

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

1421661150 is a wasteful number, since it uses less digits than its factorization.

1421661150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1421661150 is about 37704.9220924802. The cubic root of 1421661150 is about 1124.4289842929.

Subtracting from 1421661150 its reverse (511661241), we obtain a palindrome (909999909).

The spelling of 1421661150 in words is "one billion, four hundred twenty-one million, six hundred sixty-one thousand, one hundred fifty".