1421045516 has 18 divisors (see below), whose sum is σ = 2713382532. Its totient is φ = 645816120.

The previous prime is 1421045497. The next prime is 1421045519. The reversal of 1421045516 is 6155401241.

It is not an unprimeable number, because it can be changed into a prime (1421045519) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 247211 + ... + 252893.

It is an arithmetic number, because the mean of its divisors is an integer number (150743474).

Almost surely, 2^1421045516 is an apocalyptic number.

It is an amenable number.

1421045516 is a deficient number, since it is larger than the sum of its proper divisors (1292337016).

1421045516 is an frugal number, since it uses more digits than its factorization.

1421045516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11381 (or 5696 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 1421045516 is about 37696.7573671795. The cubic root of 1421045516 is about 1124.2666538485.

Adding to 1421045516 its reverse (6155401241), we get a palindrome (7576446757).

The spelling of 1421045516 in words is "one billion, four hundred twenty-one million, forty-five thousand, five hundred sixteen".