1440120201 has 32 divisors (see below), whose sum is σ = 2192738688. Its totient is φ = 832865280.

The previous prime is 1440120191. The next prime is 1440120211. The reversal of 1440120201 is 1020210441.

It is an interprime number because it is at equal distance from previous prime (1440120191) and next prime (1440120211).

It is not a de Polignac number, because 1440120201 - 2⁹ = 1440119689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1440120211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 642655 + ... + 644891.

It is an arithmetic number, because the mean of its divisors is an integer number (68523084).

Almost surely, 2^1440120201 is an apocalyptic number.

It is an amenable number.

1440120201 is a deficient number, since it is larger than the sum of its proper divisors (752618487).

1440120201 is a wasteful number, since it uses less digits than its factorization.

1440120201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3241.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1440120201 is about 37948.9156762087. The cubic root of 1440120201 is about 1129.2746541918.

Adding to 1440120201 its reverse (1020210441), we get a palindrome (2460330642).

The spelling of 1440120201 in words is "one billion, four hundred forty million, one hundred twenty thousand, two hundred one".