1421544434 has 16 divisors (see below), whose sum is σ = 2154426336. Its totient is φ = 703416000.

The previous prime is 1421544433. The next prime is 1421544461. The reversal of 1421544434 is 4344451241.

It is a super-3 number, since 3×1421544434³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1421544434.

It is not an unprimeable number, because it can be changed into a prime (1421544433) by changing a digit.

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, 254249 + ... + 259779.

It is an arithmetic number, because the mean of its divisors is an integer number (134651646).

Almost surely, 2^1421544434 is an apocalyptic number.

1421544434 is a deficient number, since it is larger than the sum of its proper divisors (732881902).

1421544434 is a wasteful number, since it uses less digits than its factorization.

1421544434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6841.

The product of its digits is 30720, while the sum is 32.

The square root of 1421544434 is about 37703.3743052263. The cubic root of 1421544434 is about 1124.3982122052.

Adding to 1421544434 its reverse (4344451241), we get a palindrome (5765995675).

The spelling of 1421544434 in words is "one billion, four hundred twenty-one million, five hundred forty-four thousand, four hundred thirty-four".