42892991 has 2 divisors, whose sum is σ = 42892992. Its totient is φ = 42892990.

The previous prime is 42892987. The next prime is 42893009. The reversal of 42892991 is 19929824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42892991 - 2² = 42892987 is a prime.

It is a super-3 number, since 3×42892991³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42892901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21446495 + 21446496.

It is an arithmetic number, because the mean of its divisors is an integer number (21446496).

Almost surely, 2^42892991 is an apocalyptic number.

42892991 is a deficient number, since it is larger than the sum of its proper divisors (1).

42892991 is an equidigital number, since it uses as much as digits as its factorization.

42892991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 44.

The square root of 42892991 is about 6549.2740819117. The cubic root of 42892991 is about 350.0489482562.

The spelling of 42892991 in words is "forty-two million, eight hundred ninety-two thousand, nine hundred ninety-one".