1258542 has 24 divisors (see below), whose sum is σ = 2822040. Its totient is φ = 404880.

The previous prime is 1258531. The next prime is 1258559. The reversal of 1258542 is 2458521.

It is a happy number.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 684 + ... + 1727.

It is an arithmetic number, because the mean of its divisors is an integer number (117585).

2^1258542 is an apocalyptic number.

1258542 is an abundant number, since it is smaller than the sum of its proper divisors (1563498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1258542 is a wasteful number, since it uses less digits than its factorization.

1258542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2448 (or 2445 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 1258542 is about 1121.8475832304. The cubic root of 1258542 is about 107.9665534290.

The spelling of 1258542 in words is "one million, two hundred fifty-eight thousand, five hundred forty-two".