42750157 has 2 divisors, whose sum is σ = 42750158. Its totient is φ = 42750156.

The previous prime is 42750143. The next prime is 42750181. The reversal of 42750157 is 75105724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30261001 + 12489156 = 5501^2 + 3534^2 .

It is a cyclic number.

It is not a de Polignac number, because 42750157 - 2¹¹ = 42748109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42750137) 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, 21375078 + 21375079.

It is an arithmetic number, because the mean of its divisors is an integer number (21375079).

Almost surely, 2^42750157 is an apocalyptic number.

It is an amenable number.

42750157 is a deficient number, since it is larger than the sum of its proper divisors (1).

42750157 is an equidigital number, since it uses as much as digits as its factorization.

42750157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 42750157 is about 6538.3604213901. The cubic root of 42750157 is about 349.6599609018.

The spelling of 42750157 in words is "forty-two million, seven hundred fifty thousand, one hundred fifty-seven".