42538151 has 2 divisors, whose sum is σ = 42538152. Its totient is φ = 42538150.

The previous prime is 42538127. The next prime is 42538193. The reversal of 42538151 is 15183524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42538151 - 2¹⁴ = 42521767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42538121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21269075 + 21269076.

It is an arithmetic number, because the mean of its divisors is an integer number (21269076).

Almost surely, 2^42538151 is an apocalyptic number.

42538151 is a deficient number, since it is larger than the sum of its proper divisors (1).

42538151 is an equidigital number, since it uses as much as digits as its factorization.

42538151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 29.

The square root of 42538151 is about 6522.1277969693. The cubic root of 42538151 is about 349.0809931261.

The spelling of 42538151 in words is "forty-two million, five hundred thirty-eight thousand, one hundred fifty-one".