249587785942 has 16 divisors (see below), whose sum is σ = 408509547264. Its totient is φ = 113423113000.

The previous prime is 249587785927. The next prime is 249587785949.

It is a happy number.

249587785942 is nontrivially palindromic in base 10.

249587785942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×249587785942² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249587785949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1195234 + ... + 1388437.

It is an arithmetic number, because the mean of its divisors is an integer number (25531846704).

Almost surely, 2^249587785942 is an apocalyptic number.

249587785942 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

249587785942 is a deficient number, since it is larger than the sum of its proper divisors (158921761322).

249587785942 is a wasteful number, since it uses less digits than its factorization.

249587785942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588075.

The product of its digits is 406425600, while the sum is 70.

The spelling of 249587785942 in words is "two hundred forty-nine billion, five hundred eighty-seven million, seven hundred eighty-five thousand, nine hundred forty-two".