1421120401 has 4 divisors (see below), whose sum is σ = 1429630272. Its totient is φ = 1412610532.

The previous prime is 1421120381. The next prime is 1421120413. The reversal of 1421120401 is 1040211241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421120401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421120101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4254685 + ... + 4255018.

It is an arithmetic number, because the mean of its divisors is an integer number (357407568).

Almost surely, 2^1421120401 is an apocalyptic number.

It is an amenable number.

1421120401 is a deficient number, since it is larger than the sum of its proper divisors (8509871).

1421120401 is an equidigital number, since it uses as much as digits as its factorization.

1421120401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8509870.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1421120401 is about 37697.7506092870. The cubic root of 1421120401 is about 1124.2864020382.

Adding to 1421120401 its reverse (1040211241), we get a palindrome (2461331642).

The spelling of 1421120401 in words is "one billion, four hundred twenty-one million, one hundred twenty thousand, four hundred one".