1206402147 has 8 divisors (see below), whose sum is σ = 1787262480. Its totient is φ = 804268080.

The previous prime is 1206402139. The next prime is 1206402149. The reversal of 1206402147 is 7412046021.

1206402147 is a `hidden beast` number, since 1 + 2 + 0 + 640 + 2 + 14 + 7 = 666.

It is not a de Polignac number, because 1206402147 - 2³ = 1206402139 is a prime.

It is a super-2 number, since 2×1206402147² = 2910812280572419218, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 44681561 = 1206402147 / (1 + 2 + 0 + 6 + 4 + 0 + 2 + 1 + 4 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 1206402147.

It is not an unprimeable number, because it can be changed into a prime (1206402149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22340754 + ... + 22340807.

It is an arithmetic number, because the mean of its divisors is an integer number (223407810).

Almost surely, 2^1206402147 is an apocalyptic number.

1206402147 is a deficient number, since it is larger than the sum of its proper divisors (580860333).

1206402147 is an equidigital number, since it uses as much as digits as its factorization.

1206402147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44681570 (or 44681564 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 1206402147 is about 34733.3002607008. The cubic root of 1206402147 is about 1064.5450228764.

Adding to 1206402147 its reverse (7412046021), we get a palindrome (8618448168).

The spelling of 1206402147 in words is "one billion, two hundred six million, four hundred two thousand, one hundred forty-seven".