42472879 has 2 divisors, whose sum is σ = 42472880. Its totient is φ = 42472878.

The previous prime is 42472873. The next prime is 42472967. The reversal of 42472879 is 97827424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42472879 - 2⁷ = 42472751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42472873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21236439 + 21236440.

It is an arithmetic number, because the mean of its divisors is an integer number (21236440).

Almost surely, 2^42472879 is an apocalyptic number.

42472879 is a deficient number, since it is larger than the sum of its proper divisors (1).

42472879 is an equidigital number, since it uses as much as digits as its factorization.

42472879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 43.

The square root of 42472879 is about 6517.1219875034. The cubic root of 42472879 is about 348.9023544365.

The spelling of 42472879 in words is "forty-two million, four hundred seventy-two thousand, eight hundred seventy-nine".