249942430080 has 768 divisors, whose sum is σ = 1035357120000. Its totient is φ = 56818298880.

The previous prime is 249942430069. The next prime is 249942430099. The reversal of 249942430080 is 80034249942.

It is a happy number.

249942430080 is a `hidden beast` number, since 2 + 499 + 42 + 43 + 0 + 0 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 178657221 + ... + 178658619.

It is an arithmetic number, because the mean of its divisors is an integer number (1348121250).

Almost surely, 2^249942430080 is an apocalyptic number.

249942430080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249942430080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (517678560000).

249942430080 is an abundant number, since it is smaller than the sum of its proper divisors (785414689920).

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

249942430080 is a wasteful number, since it uses less digits than its factorization.

249942430080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652 (or 1627 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 249942430080 in words is "two hundred forty-nine billion, nine hundred forty-two million, four hundred thirty thousand, eighty".