1258642 has 24 divisors (see below), whose sum is σ = 2374848. Its totient is φ = 489720.

The previous prime is 1258639. The next prime is 1258643. The reversal of 1258642 is 2468521.

It is a self number, because there is not a number n which added to its sum of digits gives 1258642.

It is not an unprimeable number, because it can be changed into a prime (1258643) 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, 1323 + ... + 2065.

It is an arithmetic number, because the mean of its divisors is an integer number (98952).

2^1258642 is an apocalyptic number.

1258642 is a deficient number, since it is larger than the sum of its proper divisors (1116206).

1258642 is a wasteful number, since it uses less digits than its factorization.

1258642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774 (or 763 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 1258642 is about 1121.8921516795. The cubic root of 1258642 is about 107.9694129202.

The spelling of 1258642 in words is "one million, two hundred fifty-eight thousand, six hundred forty-two".