1285742153 has 2 divisors, whose sum is σ = 1285742154. Its totient is φ = 1285742152.

The previous prime is 1285742131. The next prime is 1285742177. The reversal of 1285742153 is 3512475821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1175324089 + 110418064 = 34283^2 + 10508^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1285742153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1285747153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642871076 + 642871077.

It is an arithmetic number, because the mean of its divisors is an integer number (642871077).

Almost surely, 2^1285742153 is an apocalyptic number.

It is an amenable number.

1285742153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285742153 is an equidigital number, since it uses as much as digits as its factorization.

1285742153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 38.

The square root of 1285742153 is about 35857.2468686596. The cubic root of 1285742153 is about 1087.3882291082.

The spelling of 1285742153 in words is "one billion, two hundred eighty-five million, seven hundred forty-two thousand, one hundred fifty-three".