42528751 has 2 divisors, whose sum is σ = 42528752. Its totient is φ = 42528750.

The previous prime is 42528671. The next prime is 42528833. The reversal of 42528751 is 15782524.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42528751 - 2¹³ = 42520559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42528151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21264375 + 21264376.

It is an arithmetic number, because the mean of its divisors is an integer number (21264376).

Almost surely, 2^42528751 is an apocalyptic number.

42528751 is the 4125-th centered pentagonal number.

42528751 is a deficient number, since it is larger than the sum of its proper divisors (1).

42528751 is an equidigital number, since it uses as much as digits as its factorization.

42528751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22400, while the sum is 34.

The square root of 42528751 is about 6521.4071334337. The cubic root of 42528751 is about 349.0552781464.

The spelling of 42528751 in words is "forty-two million, five hundred twenty-eight thousand, seven hundred fifty-one".