1420233121 has 4 divisors (see below), whose sum is σ = 1420970544. Its totient is φ = 1419495700.

The previous prime is 1420233119. The next prime is 1420233127. The reversal of 1420233121 is 1213320241.

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 not a de Polignac number, because 1420233121 - 2¹ = 1420233119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420233127) 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, 365815 + ... + 369676.

It is an arithmetic number, because the mean of its divisors is an integer number (355242636).

Almost surely, 2^1420233121 is an apocalyptic number.

It is an amenable number.

1420233121 is a deficient number, since it is larger than the sum of its proper divisors (737423).

1420233121 is an equidigital number, since it uses as much as digits as its factorization.

1420233121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737422.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1420233121 is about 37685.9804303935. The cubic root of 1420233121 is about 1124.0523696698.

Adding to 1420233121 its reverse (1213320241), we get a palindrome (2633553362).

The spelling of 1420233121 in words is "one billion, four hundred twenty million, two hundred thirty-three thousand, one hundred twenty-one".