204142747 has 2 divisors, whose sum is σ = 204142748. Its totient is φ = 204142746.

The previous prime is 204142739. The next prime is 204142753. The reversal of 204142747 is 747241402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204142747 - 2³ = 204142739 is a prime.

It is a super-2 number, since 2×204142747² = 83348522305412018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (204142777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102071373 + 102071374.

It is an arithmetic number, because the mean of its divisors is an integer number (102071374).

Almost surely, 2^204142747 is an apocalyptic number.

204142747 is a deficient number, since it is larger than the sum of its proper divisors (1).

204142747 is an equidigital number, since it uses as much as digits as its factorization.

204142747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12544, while the sum is 31.

The square root of 204142747 is about 14287.8531277446. The cubic root of 204142747 is about 588.8138065516.

The spelling of 204142747 in words is "two hundred four million, one hundred forty-two thousand, seven hundred forty-seven".