1420263101 has 4 divisors (see below), whose sum is σ = 1447060572. Its totient is φ = 1393465632.

The previous prime is 1420263043. The next prime is 1420263121. The reversal of 1420263101 is 1013620241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1013620241 = 19213 ⋅52757.

It can be written as a sum of positive squares in 2 ways, for example, as 992187001 + 428076100 = 31499^2 + 20690^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420263101 - 2²⁶ = 1353154237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420263121) 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, 13398656 + ... + 13398761.

It is an arithmetic number, because the mean of its divisors is an integer number (361765143).

Almost surely, 2^1420263101 is an apocalyptic number.

It is an amenable number.

1420263101 is a deficient number, since it is larger than the sum of its proper divisors (26797471).

1420263101 is an equidigital number, since it uses as much as digits as its factorization.

1420263101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26797470.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1420263101 is about 37686.3781889425. The cubic root of 1420263101 is about 1124.0602789002.

Adding to 1420263101 its reverse (1013620241), we get a palindrome (2433883342).

The spelling of 1420263101 in words is "one billion, four hundred twenty million, two hundred sixty-three thousand, one hundred one".