42435313251 has 4 divisors (see below), whose sum is σ = 56580417672. Its totient is φ = 28290208832.

The previous prime is 42435313247. The next prime is 42435313273. The reversal of 42435313251 is 15231353424.

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

It is a cyclic number.

It is not a de Polignac number, because 42435313251 - 2² = 42435313247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42435313751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7072552206 + ... + 7072552211.

It is an arithmetic number, because the mean of its divisors is an integer number (14145104418).

Almost surely, 2^42435313251 is an apocalyptic number.

42435313251 is a deficient number, since it is larger than the sum of its proper divisors (14145104421).

42435313251 is a wasteful number, since it uses less digits than its factorization.

42435313251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14145104420.

The product of its digits is 43200, while the sum is 33.

Adding to 42435313251 its reverse (15231353424), we get a palindrome (57666666675).

The spelling of 42435313251 in words is "forty-two billion, four hundred thirty-five million, three hundred thirteen thousand, two hundred fifty-one".