1420566401 has 4 divisors (see below), whose sum is σ = 1455214404. Its totient is φ = 1385918400.

The previous prime is 1420566391. The next prime is 1420566403. The reversal of 1420566401 is 1046650241.

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 511845376 + 908721025 = 22624^2 + 30145^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420566401 - 2¹⁴ = 1420550017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420566403) 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, 17323940 + ... + 17324021.

It is an arithmetic number, because the mean of its divisors is an integer number (363803601).

Almost surely, 2^1420566401 is an apocalyptic number.

It is an amenable number.

1420566401 is a deficient number, since it is larger than the sum of its proper divisors (34648003).

1420566401 is an equidigital number, since it uses as much as digits as its factorization.

1420566401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34648002.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1420566401 is about 37690.4019745080. The cubic root of 1420566401 is about 1124.1402883052.

The spelling of 1420566401 in words is "one billion, four hundred twenty million, five hundred sixty-six thousand, four hundred one".