42928693 has 2 divisors, whose sum is σ = 42928694. Its totient is φ = 42928692.

The previous prime is 42928687. The next prime is 42928727. The reversal of 42928693 is 39682924.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22071204 + 20857489 = 4698^2 + 4567^2 .

It is a cyclic number.

It is not a de Polignac number, because 42928693 - 2⁵ = 42928661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42928643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21464346 + 21464347.

It is an arithmetic number, because the mean of its divisors is an integer number (21464347).

Almost surely, 2^42928693 is an apocalyptic number.

It is an amenable number.

42928693 is a deficient number, since it is larger than the sum of its proper divisors (1).

42928693 is an equidigital number, since it uses as much as digits as its factorization.

42928693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 43.

The square root of 42928693 is about 6551.9991605616. Note that the first 3 decimals coincide. The cubic root of 42928693 is about 350.1460424546.

The spelling of 42928693 in words is "forty-two million, nine hundred twenty-eight thousand, six hundred ninety-three".