1201401143 has 4 divisors (see below), whose sum is σ = 1201894560. Its totient is φ = 1200907728.

The previous prime is 1201401119. The next prime is 1201401287. The reversal of 1201401143 is 3411041021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3411041021 = 8467 ⋅402863.

It is a cyclic number.

It is not a de Polignac number, because 1201401143 - 2⁶ = 1201401079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201400143) 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, 243038 + ... + 247931.

It is an arithmetic number, because the mean of its divisors is an integer number (300473640).

Almost surely, 2^1201401143 is an apocalyptic number.

1201401143 is a deficient number, since it is larger than the sum of its proper divisors (493417).

1201401143 is an equidigital number, since it uses as much as digits as its factorization.

1201401143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493416.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1201401143 is about 34661.2340086154. The cubic root of 1201401143 is about 1063.0720018180.

Adding to 1201401143 its reverse (3411041021), we get a palindrome (4612442164).

The spelling of 1201401143 in words is "one billion, two hundred one million, four hundred one thousand, one hundred forty-three".