1261359 has 32 divisors (see below), whose sum is σ = 2119680. Its totient is φ = 734400.

The previous prime is 1261357. The next prime is 1261363. The reversal of 1261359 is 9531621.

1261359 = 15³ + 16³ + ... + 47³.

It is not a de Polignac number, because 1261359 - 2¹ = 1261357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261357) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9139 + ... + 9275.

It is an arithmetic number, because the mean of its divisors is an integer number (66240).

2^1261359 is an apocalyptic number.

1261359 is a deficient number, since it is larger than the sum of its proper divisors (858321).

1261359 is a wasteful number, since it uses less digits than its factorization.

1261359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 182 counting only the distinct ones).

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

The square root of 1261359 is about 1123.1023996057. The cubic root of 1261359 is about 108.0470474033.

It can be divided in two parts, 126 and 1359, that added together give a triangular number (1485 = T₅₄).

The spelling of 1261359 in words is "one million, two hundred sixty-one thousand, three hundred fifty-nine".