1421361601 has 16 divisors (see below), whose sum is σ = 1624377600. Its totient is φ = 1231776000.

The previous prime is 1421361589. The next prime is 1421361607. The reversal of 1421361601 is 1061631241.

It is a cyclic number.

It is not a de Polignac number, because 1421361601 - 2⁵ = 1421361569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421361607) 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, 3000 + ... + 53401.

It is an arithmetic number, because the mean of its divisors is an integer number (101523600).

Almost surely, 2^1421361601 is an apocalyptic number.

1421361601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1421361601 is a deficient number, since it is larger than the sum of its proper divisors (203015999).

1421361601 is a wasteful number, since it uses less digits than its factorization.

1421361601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56520.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1421361601 is about 37700.9496034251. The cubic root of 1421361601 is about 1124.3500050329.

Adding to 1421361601 its reverse (1061631241), we get a palindrome (2482992842).

The spelling of 1421361601 in words is "one billion, four hundred twenty-one million, three hundred sixty-one thousand, six hundred one".