259820442 has 48 divisors (see below), whose sum is σ = 656510400. Its totient is φ = 74232648.

The previous prime is 259820441. The next prime is 259820467. The reversal of 259820442 is 244028952.

259820442 is a `hidden beast` number, since 2 + 598 + 20 + 4 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 259820397 and 259820406.

It is not an unprimeable number, because it can be changed into a prime (259820441) 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 23 ways as a sum of consecutive naturals, for example, 14868 + ... + 27215.

It is an arithmetic number, because the mean of its divisors is an integer number (13677300).

Almost surely, 2^259820442 is an apocalyptic number.

259820442 is an abundant number, since it is smaller than the sum of its proper divisors (396689958).

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

259820442 is a wasteful number, since it uses less digits than its factorization.

259820442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42112 (or 42095 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 259820442 is about 16118.9466777454. The cubic root of 259820442 is about 638.1034691646.

The spelling of 259820442 in words is "two hundred fifty-nine million, eight hundred twenty thousand, four hundred forty-two".