245942 has 4 divisors (see below), whose sum is σ = 368916. Its totient is φ = 122970.

The previous prime is 245941. The next prime is 245963. The reversal of 245942 is 249542.

245942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 249542 = 2 ⋅124771.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61484 + ... + 61487.

It is an arithmetic number, because the mean of its divisors is an integer number (92229).

2²⁴⁵⁹⁴² is an apocalyptic number.

245942 is a deficient number, since it is larger than the sum of its proper divisors (122974).

245942 is a wasteful number, since it uses less digits than its factorization.

245942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122973.

The product of its digits is 2880, while the sum is 26.

The square root of 245942 is about 495.9253976154. The cubic root of 245942 is about 62.6533408112.

Subtracting 245942 from its reverse (249542), we obtain a square (3600 = 60²).

The spelling of 245942 in words is "two hundred forty-five thousand, nine hundred forty-two".