1263159 has 6 divisors (see below), whose sum is σ = 1824576. Its totient is φ = 842100.

The previous prime is 1263133. The next prime is 1263173. The reversal of 1263159 is 9513621.

It is not a de Polignac number, because 1263159 - 2⁸ = 1262903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70167 + ... + 70184.

It is an arithmetic number, because the mean of its divisors is an integer number (304096).

2^1263159 is an apocalyptic number.

1263159 is a deficient number, since it is larger than the sum of its proper divisors (561417).

1263159 is a wasteful number, since it uses less digits than its factorization.

1263159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140357 (or 140354 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 1263159 is about 1123.9034656055. The cubic root of 1263159 is about 108.0984185161.

The spelling of 1263159 in words is "one million, two hundred sixty-three thousand, one hundred fifty-nine".