1420864401 has 24 divisors (see below), whose sum is σ = 2097641952. Its totient is φ = 854814400.

The previous prime is 1420864381. The next prime is 1420864411. The reversal of 1420864401 is 1044680241.

It is not a de Polignac number, because 1420864401 - 2⁶ = 1420864337 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1420864411) 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, 35446 + ... + 64016.

It is an arithmetic number, because the mean of its divisors is an integer number (87401748).

Almost surely, 2^1420864401 is an apocalyptic number.

1420864401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1420864401 is a deficient number, since it is larger than the sum of its proper divisors (676777551).

1420864401 is a wasteful number, since it uses less digits than its factorization.

1420864401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28733 (or 28722 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 1420864401 is about 37694.3550283063. The cubic root of 1420864401 is about 1124.2188884992.

The spelling of 1420864401 in words is "one billion, four hundred twenty million, eight hundred sixty-four thousand, four hundred one".