1420362785 has 4 divisors (see below), whose sum is σ = 1704435348. Its totient is φ = 1136290224.

The previous prime is 1420362781. The next prime is 1420362791. The reversal of 1420362785 is 5872630241.

It is a happy number.

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 155351296 + 1265011489 = 12464^2 + 35567^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420362785 - 2² = 1420362781 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420362781) 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, 142036274 + ... + 142036283.

It is an arithmetic number, because the mean of its divisors is an integer number (426108837).

Almost surely, 2^1420362785 is an apocalyptic number.

It is an amenable number.

1420362785 is a deficient number, since it is larger than the sum of its proper divisors (284072563).

1420362785 is an equidigital number, since it uses as much as digits as its factorization.

1420362785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284072562.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 1420362785 is about 37687.7007125667. The cubic root of 1420362785 is about 1124.0865764229.

The spelling of 1420362785 in words is "one billion, four hundred twenty million, three hundred sixty-two thousand, seven hundred eighty-five".