42923851 has 2 divisors, whose sum is σ = 42923852. Its totient is φ = 42923850.

The previous prime is 42923833. The next prime is 42923863. The reversal of 42923851 is 15832924.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42923851 - 2¹¹ = 42921803 is a prime.

It is not a weakly prime, because it can be changed into another prime (42923821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21461925 + 21461926.

It is an arithmetic number, because the mean of its divisors is an integer number (21461926).

Almost surely, 2^42923851 is an apocalyptic number.

42923851 is a deficient number, since it is larger than the sum of its proper divisors (1).

42923851 is an equidigital number, since it uses as much as digits as its factorization.

42923851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The square root of 42923851 is about 6551.6296445999. The cubic root of 42923851 is about 350.1328774379.

The spelling of 42923851 in words is "forty-two million, nine hundred twenty-three thousand, eight hundred fifty-one".