42538751 has 2 divisors, whose sum is σ = 42538752. Its totient is φ = 42538750.

The previous prime is 42538747. The next prime is 42538757. The reversal of 42538751 is 15783524.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42538751 - 2² = 42538747 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42538757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21269375 + 21269376.

It is an arithmetic number, because the mean of its divisors is an integer number (21269376).

Almost surely, 2^42538751 is an apocalyptic number.

42538751 is a deficient number, since it is larger than the sum of its proper divisors (1).

42538751 is an equidigital number, since it uses as much as digits as its factorization.

42538751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 35.

The square root of 42538751 is about 6522.1737940659. The cubic root of 42538751 is about 349.0826343792.

The spelling of 42538751 in words is "forty-two million, five hundred thirty-eight thousand, seven hundred fifty-one".