1420257609 has 24 divisors (see below), whose sum is σ = 2097643392. Its totient is φ = 925582560.

The previous prime is 1420257599. The next prime is 1420257611. The reversal of 1420257609 is 9067520241.

1420257609 is a `hidden beast` number, since 1 + 4 + 20 + 25 + 7 + 609 = 666.

It is not a de Polignac number, because 1420257609 - 2⁵ = 1420257577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1420257649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 498142 + ... + 500984.

It is an arithmetic number, because the mean of its divisors is an integer number (87401808).

Almost surely, 2^1420257609 is an apocalyptic number.

It is an amenable number.

1420257609 is a deficient number, since it is larger than the sum of its proper divisors (677385783).

1420257609 is a wasteful number, since it uses less digits than its factorization.

1420257609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4077 (or 4074 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1420257609 is about 37686.3053243483. The cubic root of 1420257609 is about 1124.0588300262.

The spelling of 1420257609 in words is "one billion, four hundred twenty million, two hundred fifty-seven thousand, six hundred nine".