42240022751 has 4 divisors (see below), whose sum is σ = 42955955400. Its totient is φ = 41524090104.

The previous prime is 42240022697. The next prime is 42240022801. The reversal of 42240022751 is 15722004224.

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 42240022751 - 2¹⁰ = 42240021727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42240022351) 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, 357966236 + ... + 357966353.

It is an arithmetic number, because the mean of its divisors is an integer number (10738988850).

Almost surely, 2^42240022751 is an apocalyptic number.

42240022751 is a deficient number, since it is larger than the sum of its proper divisors (715932649).

42240022751 is an equidigital number, since it uses as much as digits as its factorization.

42240022751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715932648.

The product of its (nonzero) digits is 8960, while the sum is 29.

Adding to 42240022751 its reverse (15722004224), we get a palindrome (57962026975).

The spelling of 42240022751 in words is "forty-two billion, two hundred forty million, twenty-two thousand, seven hundred fifty-one".