1239057 has 12 divisors (see below), whose sum is σ = 1856400. Its totient is φ = 825876.

The previous prime is 1239041. The next prime is 1239067. The reversal of 1239057 is 7509321.

It is not a de Polignac number, because 1239057 - 2⁴ = 1239041 is a prime.

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

1239057 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1239057.

It is not an unprimeable number, because it can be changed into a prime (1239067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2307 + ... + 2792.

It is an arithmetic number, because the mean of its divisors is an integer number (154700).

2^1239057 is an apocalyptic number.

It is an amenable number.

1239057 is a deficient number, since it is larger than the sum of its proper divisors (617343).

1239057 is an frugal number, since it uses more digits than its factorization.

1239057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5114 (or 5102 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 1239057 is about 1113.1293725349. The cubic root of 1239057 is about 107.4064663252.

It can be divided in two parts, 123 and 9057, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 1239057 in words is "one million, two hundred thirty-nine thousand, fifty-seven".