1202145047 has 4 divisors (see below), whose sum is σ = 1205986080. Its totient is φ = 1198304016.

The previous prime is 1202145041. The next prime is 1202145053. The reversal of 1202145047 is 7405412021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7405412021 = 7 ⋅1057916003.

It is an interprime number because it is at equal distance from previous prime (1202145041) and next prime (1202145053).

It is a cyclic number.

It is not a de Polignac number, because 1202145047 - 2²⁶ = 1135036183 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 (1202145041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1920047 + ... + 1920672.

It is an arithmetic number, because the mean of its divisors is an integer number (301496520).

Almost surely, 2^1202145047 is an apocalyptic number.

1202145047 is a deficient number, since it is larger than the sum of its proper divisors (3841033).

1202145047 is an equidigital number, since it uses as much as digits as its factorization.

1202145047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3841032.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 1202145047 is about 34671.9634142631. The cubic root of 1202145047 is about 1063.2913735491.

Adding to 1202145047 its reverse (7405412021), we get a palindrome (8607557068).

The spelling of 1202145047 in words is "one billion, two hundred two million, one hundred forty-five thousand, forty-seven".