245646542 has 32 divisors (see below), whose sum is σ = 387932160. Its totient is φ = 116523360.

The previous prime is 245646431. The next prime is 245646563.

245646542 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 245646496 and 245646505.

It is a congruent 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, 1101443 + ... + 1101665.

It is an arithmetic number, because the mean of its divisors is an integer number (12122880).

Almost surely, 2^245646542 is an apocalyptic number.

245646542 is a deficient number, since it is larger than the sum of its proper divisors (142285618).

245646542 is a wasteful number, since it uses less digits than its factorization.

245646542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528.

The product of its digits is 230400, while the sum is 38.

The square root of 245646542 is about 15673.1152614916. The cubic root of 245646542 is about 626.2824160282.

The spelling of 245646542 in words is "two hundred forty-five million, six hundred forty-six thousand, five hundred forty-two".