245547442 has 32 divisors (see below), whose sum is σ = 434214144. Its totient is φ = 101952000.

The previous prime is 245547427. The next prime is 245547521. The reversal of 245547442 is 244745542.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85258 + ... + 88090.

It is an arithmetic number, because the mean of its divisors is an integer number (13569192).

Almost surely, 2^245547442 is an apocalyptic number.

245547442 is a deficient number, since it is larger than the sum of its proper divisors (188666702).

245547442 is a wasteful number, since it uses less digits than its factorization.

245547442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3034.

The product of its digits is 179200, while the sum is 37.

The square root of 245547442 is about 15669.9534779143. The cubic root of 245547442 is about 626.1981853352.

The spelling of 245547442 in words is "two hundred forty-five million, five hundred forty-seven thousand, four hundred forty-two".