245642142 has 32 divisors (see below), whose sum is σ = 495991584. Its totient is φ = 81100800.

The previous prime is 245642123. The next prime is 245642183. The reversal of 245642142 is 241246542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371292 + ... + 371952.

It is an arithmetic number, because the mean of its divisors is an integer number (15499737).

Almost surely, 2^245642142 is an apocalyptic number.

245642142 is an abundant number, since it is smaller than the sum of its proper divisors (250349442).

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

245642142 is a wasteful number, since it uses less digits than its factorization.

245642142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164.

The product of its digits is 15360, while the sum is 30.

The square root of 245642142 is about 15672.9748931082. The cubic root of 245642142 is about 626.2786767001.

Adding to 245642142 its reverse (241246542), we get a palindrome (486888684).

The spelling of 245642142 in words is "two hundred forty-five million, six hundred forty-two thousand, one hundred forty-two".