1426220945 has 4 divisors (see below), whose sum is σ = 1711465140. Its totient is φ = 1140976752.

The previous prime is 1426220941. The next prime is 1426220977. The reversal of 1426220945 is 5490226241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5490226241 = 37 ⋅148384493.

It can be written as a sum of positive squares in 2 ways, for example, as 538657681 + 887563264 = 23209^2 + 29792^2 .

It is a cyclic number.

It is not a de Polignac number, because 1426220945 - 2² = 1426220941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1426220941) 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, 142622090 + ... + 142622099.

It is an arithmetic number, because the mean of its divisors is an integer number (427866285).

Almost surely, 2^1426220945 is an apocalyptic number.

It is an amenable number.

1426220945 is a deficient number, since it is larger than the sum of its proper divisors (285244195).

1426220945 is an equidigital number, since it uses as much as digits as its factorization.

1426220945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285244194.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 1426220945 is about 37765.3405254077. The cubic root of 1426220945 is about 1125.6298550332.

The spelling of 1426220945 in words is "one billion, four hundred twenty-six million, two hundred twenty thousand, nine hundred forty-five".