1421201124 has 72 divisors (see below), whose sum is σ = 4111248960. Its totient is φ = 405508032.

The previous prime is 1421201069. The next prime is 1421201141. The reversal of 1421201124 is 4211021241.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1421201097 and 1421201106.

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 23 ways as a sum of consecutive naturals, for example, 205507 + ... + 212309.

It is an arithmetic number, because the mean of its divisors is an integer number (57100680).

Almost surely, 2^1421201124 is an apocalyptic number.

1421201124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1421201124 is an abundant number, since it is smaller than the sum of its proper divisors (2690047836).

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

1421201124 is a wasteful number, since it uses less digits than its factorization.

1421201124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7649 (or 7644 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1421201124 is about 37698.8212547820. The cubic root of 1421201124 is about 1124.3076890108.

Adding to 1421201124 its reverse (4211021241), we get a palindrome (5632222365).

The spelling of 1421201124 in words is "one billion, four hundred twenty-one million, two hundred one thousand, one hundred twenty-four".