1421545433 has 16 divisors (see below), whose sum is σ = 1773367296. Its totient is φ = 1107041040.

The previous prime is 1421545421. The next prime is 1421545451. The reversal of 1421545433 is 3345451241.

It is not a de Polignac number, because 1421545433 - 2¹⁶ = 1421479897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1421545433.

It is not an unprimeable number, because it can be changed into a prime (1421545733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155960 + ... + 164822.

It is an arithmetic number, because the mean of its divisors is an integer number (110835456).

Almost surely, 2^1421545433 is an apocalyptic number.

It is an amenable number.

1421545433 is a deficient number, since it is larger than the sum of its proper divisors (351821863).

1421545433 is a wasteful number, since it uses less digits than its factorization.

1421545433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10964.

The product of its digits is 28800, while the sum is 32.

The square root of 1421545433 is about 37703.3875533751. The cubic root of 1421545433 is about 1124.3984755980.

Adding to 1421545433 its reverse (3345451241), we get a palindrome (4766996674).

The spelling of 1421545433 in words is "one billion, four hundred twenty-one million, five hundred forty-five thousand, four hundred thirty-three".