249457542 has 16 divisors (see below), whose sum is σ = 499150080. Its totient is φ = 83113352.

The previous prime is 249457513. The next prime is 249457547. The reversal of 249457542 is 245754942.

It is a happy number.

249457542 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 249457494 and 249457503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249457547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5959 + ... + 23117.

It is an arithmetic number, because the mean of its divisors is an integer number (31196880).

Almost surely, 2^249457542 is an apocalyptic number.

249457542 is an abundant number, since it is smaller than the sum of its proper divisors (249692538).

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

249457542 is a wasteful number, since it uses less digits than its factorization.

249457542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19587.

The product of its digits is 403200, while the sum is 42.

The square root of 249457542 is about 15794.2249572431. The cubic root of 249457542 is about 629.5045588297.

The spelling of 249457542 in words is "two hundred forty-nine million, four hundred fifty-seven thousand, five hundred forty-two".