1426402121 has 4 divisors (see below), whose sum is σ = 1432321044. Its totient is φ = 1420483200.

The previous prime is 1426402097. The next prime is 1426402123. The reversal of 1426402121 is 1212046241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1143792400 + 282609721 = 33820^2 + 16811^2 .

It is a cyclic number.

It is not a de Polignac number, because 1426402121 - 2⁶ = 1426402057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1426402123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2959100 + ... + 2959581.

It is an arithmetic number, because the mean of its divisors is an integer number (358080261).

Almost surely, 2^1426402121 is an apocalyptic number.

It is an amenable number.

1426402121 is a deficient number, since it is larger than the sum of its proper divisors (5918923).

1426402121 is an equidigital number, since it uses as much as digits as its factorization.

1426402121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5918922.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1426402121 is about 37767.7391565871. The cubic root of 1426402121 is about 1125.6775167648.

Adding to 1426402121 its reverse (1212046241), we get a palindrome (2638448362).

The spelling of 1426402121 in words is "one billion, four hundred twenty-six million, four hundred two thousand, one hundred twenty-one".