1420770121 has 4 divisors (see below), whose sum is σ = 1504344852. Its totient is φ = 1337195392.

The previous prime is 1420770119. The next prime is 1420770133. The reversal of 1420770121 is 1210770241.

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 1232010000 + 188760121 = 35100^2 + 13739^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420770121 - 2¹ = 1420770119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420776121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41787340 + ... + 41787373.

It is an arithmetic number, because the mean of its divisors is an integer number (376086213).

Almost surely, 2^1420770121 is an apocalyptic number.

It is an amenable number.

1420770121 is a deficient number, since it is larger than the sum of its proper divisors (83574731).

1420770121 is an equidigital number, since it uses as much as digits as its factorization.

1420770121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83574730.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 1420770121 is about 37693.1044224272. The cubic root of 1420770121 is about 1124.1940224854.

The spelling of 1420770121 in words is "one billion, four hundred twenty million, seven hundred seventy thousand, one hundred twenty-one".