42140333251 has 4 divisors (see below), whose sum is σ = 42141121672. Its totient is φ = 42139544832.

The previous prime is 42140333243. The next prime is 42140333281. The reversal of 42140333251 is 15233304124.

It is a happy number.

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 42140333251 - 2³ = 42140333243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42140333281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307710 + ... + 423043.

It is an arithmetic number, because the mean of its divisors is an integer number (10535280418).

Almost surely, 2^42140333251 is an apocalyptic number.

42140333251 is a deficient number, since it is larger than the sum of its proper divisors (788421).

42140333251 is an equidigital number, since it uses as much as digits as its factorization.

42140333251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788420.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 42140333251 its reverse (15233304124), we get a palindrome (57373637375).

The spelling of 42140333251 in words is "forty-two billion, one hundred forty million, three hundred thirty-three thousand, two hundred fifty-one".