1243040147 has 2 divisors, whose sum is σ = 1243040148. Its totient is φ = 1243040146.

The previous prime is 1243040081. The next prime is 1243040179. The reversal of 1243040147 is 7410403421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1243040147 - 2¹² = 1243036051 is a prime.

It is not a weakly prime, because it can be changed into another prime (1243010147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621520073 + 621520074.

It is an arithmetic number, because the mean of its divisors is an integer number (621520074).

Almost surely, 2^1243040147 is an apocalyptic number.

1243040147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243040147 is an equidigital number, since it uses as much as digits as its factorization.

1243040147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 1243040147 is about 35256.7744837783. The cubic root of 1243040147 is about 1075.2143497573.

Adding to 1243040147 its reverse (7410403421), we get a palindrome (8653443568).

The spelling of 1243040147 in words is "one billion, two hundred forty-three million, forty thousand, one hundred forty-seven".