1249542 has 48 divisors (see below), whose sum is σ = 3174912. Its totient is φ = 347760.

The previous prime is 1249531. The next prime is 1249559. The reversal of 1249542 is 2459421.

It is a super-2 number, since 2×1249542² = 3122710419528, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5817 + ... + 6027.

It is an arithmetic number, because the mean of its divisors is an integer number (66144).

2^1249542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1249542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1587456).

1249542 is an abundant number, since it is smaller than the sum of its proper divisors (1925370).

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

1249542 is a wasteful number, since it uses less digits than its factorization.

1249542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 270 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1249542 is about 1117.8291461579. The cubic root of 1249542 is about 107.7085764799.

The spelling of 1249542 in words is "one million, two hundred forty-nine thousand, five hundred forty-two".