245131242142 has 4 divisors (see below), whose sum is σ = 367696863216. Its totient is φ = 122565621070.

The previous prime is 245131242119. The next prime is 245131242157. The reversal of 245131242142 is 241242131542.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61282810534 + ... + 61282810537.

It is an arithmetic number, because the mean of its divisors is an integer number (91924215804).

Almost surely, 2^245131242142 is an apocalyptic number.

245131242142 is a deficient number, since it is larger than the sum of its proper divisors (122565621074).

245131242142 is a wasteful number, since it uses less digits than its factorization.

245131242142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122565621073.

The product of its digits is 15360, while the sum is 31.

Adding to 245131242142 its reverse (241242131542), we get a palindrome (486373373684).

The spelling of 245131242142 in words is "two hundred forty-five billion, one hundred thirty-one million, two hundred forty-two thousand, one hundred forty-two".