245909542 has 4 divisors (see below), whose sum is σ = 368864316. Its totient is φ = 122954770.

The previous prime is 245909527. The next prime is 245909549.

245909542 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 245909495 and 245909504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245909549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61477384 + ... + 61477387.

It is an arithmetic number, because the mean of its divisors is an integer number (92216079).

Almost surely, 2^245909542 is an apocalyptic number.

245909542 is a deficient number, since it is larger than the sum of its proper divisors (122954774).

245909542 is a wasteful number, since it uses less digits than its factorization.

245909542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122954773.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 245909542 is about 15681.5031804990. The cubic root of 245909542 is about 626.5058448164.

The spelling of 245909542 in words is "two hundred forty-five million, nine hundred nine thousand, five hundred forty-two".