42125047 has 2 divisors, whose sum is σ = 42125048. Its totient is φ = 42125046.

The previous prime is 42124987. The next prime is 42125059. The reversal of 42125047 is 74052124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42125047 - 2¹¹ = 42122999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42125077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21062523 + 21062524.

It is an arithmetic number, because the mean of its divisors is an integer number (21062524).

Almost surely, 2^42125047 is an apocalyptic number.

42125047 is a deficient number, since it is larger than the sum of its proper divisors (1).

42125047 is an equidigital number, since it uses as much as digits as its factorization.

42125047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 42125047 is about 6490.3811136173. The cubic root of 42125047 is about 347.9472962639.

The spelling of 42125047 in words is "forty-two million, one hundred twenty-five thousand, forty-seven".