1420771461 has 4 divisors (see below), whose sum is σ = 1894361952. Its totient is φ = 947180972.

The previous prime is 1420771441. The next prime is 1420771489. The reversal of 1420771461 is 1641770241.

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 1420771461 - 2¹³ = 1420763269 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420771411) 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, 236795241 + ... + 236795246.

It is an arithmetic number, because the mean of its divisors is an integer number (473590488).

Almost surely, 2^1420771461 is an apocalyptic number.

It is an amenable number.

1420771461 is a deficient number, since it is larger than the sum of its proper divisors (473590491).

1420771461 is an equidigital number, since it uses as much as digits as its factorization.

1420771461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473590490.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 1420771461 is about 37693.1221975575. The cubic root of 1420771461 is about 1124.1943759134.

The spelling of 1420771461 in words is "one billion, four hundred twenty million, seven hundred seventy-one thousand, four hundred sixty-one".