1228542 has 16 divisors (see below), whose sum is σ = 2808192. Its totient is φ = 351000.

The previous prime is 1228541. The next prime is 1228543. The reversal of 1228542 is 2458221.

It is an interprime number because it is at equal distance from previous prime (1228541) and next prime (1228543).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14584 + ... + 14667.

It is an arithmetic number, because the mean of its divisors is an integer number (175512).

2^1228542 is an apocalyptic number.

1228542 is an abundant number, since it is smaller than the sum of its proper divisors (1579650).

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

1228542 is a wasteful number, since it uses less digits than its factorization.

1228542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29263.

The product of its digits is 1280, while the sum is 24.

The square root of 1228542 is about 1108.3961385714. The cubic root of 1228542 is about 107.1017752341.

It can be divided in two parts, 1228 and 542, that added together give a triangular number (1770 = T₅₉).

The spelling of 1228542 in words is "one million, two hundred twenty-eight thousand, five hundred forty-two".